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The enclosed science materials are available through ESA, Region 2. Materials can be borrowed

for up to four weeks at no charge. To request materials contact the ESA, 367-7680,

esa2@edec.org.

Additional materials are available in other subjects, and for professional development workshops. We are in the process of establishing an online website for the

lending library. You can access the beta version at http://206.176.125.211/InfoCentre/Library.do . Please note that not all materials are currently included in the website, but more are added daily. You can search

the materials in the library. To place an item on ‘hold’, request a login and password from the ESA.

Fun with GPS teacher book (2 available)

For the millions of GPS owners who love their GPS units but don't know all they can do with them, this fun guide shows that a GPS can do

a lot more than just calculate a location. Dozens of illustrated examples show how a GPS can be attached to a multitude of devices, including dogsleds, race cars, hot-air balloons, windsurfers, pet animals, ski racers, hockey players, and sailboats. Each example includes maps and photographs to inspire hobbyists, airline passengers, athletes, animal lovers, drivers, teachers, and students to track and map their activities. How to incorporate GPS mapping technology in the classroom in order to reinforce science, math, and geography curricula, provide the groundwork for project-based learning, and show students that their schoolwork is important and relevant is discussed.

Magellan eXplorist 210 Handheld GPS Unit

(3 sets of 15 units available)

Earth Models: foam, 2 hemispheres (6 available)

This hands-on model makes illustrating the mysteries of earth easy. The outside of the model shows the oceans and continents. Earth's 2 hemispheres separate to show its 4 main layers: crust, mantle, outer core, and inner core; their temperatures; and their thicknesses. The model is easy for students to handle and examine because it's made of soft foam and measures 5" in diameter. Comes with a fact-filled activity guide.

Sun Models: foam, 2 hemispheres (6 available) Kids are naturally curious about what they see in the sky, and a great place to start their exploration is with the sun. The 5" foam model helps students learn about

this amazing star. One half of the model shows temperature and the sun's layers (core, radiation, convection, and photosphere); the other half shows the layers and are labeled A, B, C, and D for quizzing. A teacher's activity guide is included.

Finding the Moon (1 available) Grades K - 2 Students explore Finding the Moon with twelve hands-on activities and the Delta Science Reader. They discover that Earth's nearest neighbor in space is far more interesting than any storybook Moon. Through direct observations and

modeling exercises, students learn that the Moon is visible day and night, that it rises and sets, appears to change shape, casts shadows, reflects light, and lacks air and water. Students record daily drawings of the full lunar cycle in a four-week Moon Journal. Then they demonstrate the phases of the Moon, and its far side. Students also form craters on a "moon dust" surface and handle substances very similar to moon soil and rocks.

The Delta Science Reader Finding the Moon introduces students to what we see in the sky and to Earth's closest neighbor, the Moon. Students discover what makes the Moon appear to shine and why the Moon appears to have different shapes. They read about craters, seas, and other parts of the Moon's environment. Students are introduced to Neil Armstrong, the first person to walk on the Moon. Students also compare the size of the Moon to that of Earth and the Sun.

Earth-Moon Model (1 available)

Grades 5 - 8 In this one durable plastic tote container, all materials are included to teach the relative positions of the earth, moon, and sun. Students will better understand the causes of night and day, the seasons,

phases of the moon, and eclipses. Teacher guide included.

Fossil Kit ( 2available) An exciting way to introduce your students to the wonderful world of fossil collecting and study. The fossils are replicas cast in hydrostone and are very detailed. The set includes an ammonite; a cave bear tooth; a crinoid; a trilobite; an Allosaurus claw; a saber-toothed tiger tooth fragment; the Golden Guide® book, Fossils; and lesson plan.

Collection, Fossils, Premier (1available) Consists of 12 fossils (11 natural, one cast): one each of echinoderm, coral, brachiopod, gastropod, pelecypod, cephalopod, trilobite, shark’s tooth, fish, Allosaurus claw (cast), fern, and petrified wood. The

specimens are attractively displayed in a labeled, compartmented tray that is suitable for storage. The collection also includes 12 identification cards with detailed information, 4 high-quality hand lenses, a student log book, and a comprehensive teacher’s guide.

Landform Discovery Pack Grades 5 - 8 This fascinating kit for whole class use or self-directed study will teach students both geology and geography. Features

eight 3D models of various landforms that join to form a continuous 3' x 3' model. Includes a teacher guide, student workbook, and 7 audio tapes keyed to numbered features on the model. Topographic Map Reading Kit Grades 5 - 8 Students will learn how to read maps and will gain a better understanding of the marks on relief and topographical maps with this comprehensive kit. This kit contains three maps Ð a topographical map, a raised relief map, and an unprinted raised relief map that feature the same area, while providing visual and tactile definition to the lessons. The 22-page TeacherÕs Guide includes nine activities and blackline masters. Each map measures 11½" x 10½"

3D Landforms Set

Grades 3 - 10 A great way to help your students visualize landforms! Realistic 3-D landforms include an isthmus, mesa, strait, reservoir, and more than 40

geographical terms. Worksheets provide follow-up activities, puzzles, and definitions of map terms. Set includes three identical 3-D maps, six reproducible worksheets and a teacher's guide.

Relief Map of the United States

Grades 5 - 8 Make connections that explain how topography has a direct relationship to natural vegetation, plant and animal adaptations, land use, and human population. This colorful map is made of plastic that is then molded to indicate accurate relief. Outlines all states and includes a key to reading the map. 34" x 21"

Fault Model

Grades 4 - 12 Easy-to-view and easy-to-understand model provides an excellent visual representation of faults. Students will learn how rock layers react under

stress to break and slide past each other. They'll get a firsthand look at normal faults, reverse faults and strike-slip faults while learning to differentiate the hanging wall from the footwall. Colorful model is durably constructed for years of classroom use. 21" x 13" x 8 1/2"

Washington School Rock Collection

Grades 5 - 8 This rock collection comes with 40 large labeled specimens plus a guide. Sets are number coded for easy identification and study.

Mineral Study Kit

Grades 4 - 8 An excellent way to introduce minerals! Students will learn to identify 15 common minerals by observing and testing their physical properties. Kit includes an activity guide, magnifying glass, streak plate, and nail.

Sorting Sieves Grades K - 8 Students can sort a wide variety of soil particles from gravel to clay. These stackable, durable plastic sorting sieves are a natural classroom resource for students of all ages. Comes with 3 sieves and tray.

Sedimentators™ (Class Set of 10) Grades 3 - 8 Students can observe and understand the soil sedimentation process with this mess-free plastic see-through demonstration tube. This unique Earth Science teaching aid is completely sealed, contains water, and a variety of soil types-and it's 100% reusable! 10 1/2" high, 1" diameter. Includes student and teacher guides.

Sunshine and Shadows

Grades K - 2 Students explore shadows from every possible angle. They begin with a simple definition of shadow and end with a full-fledged original performance in a shadow theater. Once students identify what is needed to make a

shadow, a light source, a solid object, and a surface, they are off and running. In both indoor and outdoor activities, students make predictions about how shadows change position, size, and length, and even become multiples or disappear. From their experiments they draw conclusions about the variables, such as the sun's movement, that affect shadow shapes. They create silhouettes to explore shadow properties. And they build sundials to put shadows to work telling time.

In the Delta Science Reader Sunshine and Shadows, students read about the world of light and shadows. They learn about how shadows are formed and why shadows change size and shape. They find out about different sources of light and identify kinds of objects that block light to make a shadow. They also read about the job of a meteorologist, a scientist who studies and forecasts weather, sunny and otherwise. Finally, students learn how sundials use sunlight and shadows to tell the time.

Investigating Water

Grades K - 4 Students explore water, the most abundant substance on Earth, using many tools and techniques, so be prepared for splashes and spills. After using their senses to determine some of water's properties, students pour, mix, filter, and freeze water. They

watch water climb, bubble, condense, and take different shapes. They learn how to use pipets and wire wands, vials, and funnels, becoming familiar with scientific procedures and equipment. Experimental setups and trials help your water detectives operationally define such scientific vocabulary as sink, float, dissolve, and evaporate. They also compare water to other liquids and experiment with filtering muddy water.

In the Delta Science Reader Investigating Water, students read about the properties of water. They learn that water can exist as a solid, a liquid, or a gas and find out how water changes from one state to another. They observe that objects either sink or float in water and that some substances dissolve in water. They also read about scientists who study glaciers in Antarctica. Finally, students discuss the importance of water to living things and ways to conserve water.

Water Cycle Activity Set Grade 5-12 Simulate the stages of the water cycle as

part of your classroom weather studies! Make it rain in your classroom! Have your students gain first-hand understanding of the water cycle by duplicating the processes of evaporation, condensation, and precipitation. Includes transparencies, blackline masters, and lesson plans.

Weather Watching

Grades 2 - 5 Students explore Weather Watching with twelve hands-on activities and the Delta Science Reader. Teach your students how to observe, describe, and measure aspects of weather using key science vocabulary, weather instruments, and, most important, scientific understanding. After brainstorming why weather changes from day to day, season to season, and place to place, students investigate temperature and wind strength. They construct rain gauges, lightning rods, and wind socks. They find out which cloud formations predict which weather patterns. They explore the causal conditions for such phenomena as rainbows, thunderstorms, and snowflakes. They even model tornadoes, track hurricanes, and interpret weather maps.

In the Delta Science Reader Weather Watching, students explore what weather is and what causes it to change. They read about the water cycle and various weather tools, such as the thermometer, barometer, wind vane, rain gauge, and anemometer. The book explains how weather changes according to the seasons. Tornadoes, hurricanes, blizzards, and thunderstorms are also discussed. In a biographical sketch, students meet Ben Franklin, and they also find out about the work of a meteorologist. Students also explore how weather satellites collect weather data from space.

Weather Forecasting Video Lab Grades 5 - 12 Hands-on lab activities are coordinated with video labs to provide a multifaceted approach to learning! Students investigate

weather processes, learn to use weather instruments to gather data, and analyze their data to gain a more complete understanding of weather. A full week's worth of activities! Includes: the 2 videocassettes Weather at 5:00, and The Hydrologic Cycle; teacher guide; and enough materials for 12 lab stations.

Human Male and Female Urogenital Systems (1 available) Altay®. About 3/4× life size. This 3-part plaque mount features detailed sagittal sections of male and

female pelvises, highlighting major urogenital structures of each. In addition, a generalized urinary system is shown, including renal artery and vein, kidneys (right side showing interior anatomy), ureters, and urinary bladder with urethra. Mounted on a durable polymer base. Overall size, 53 × 38 × 3 cm. Human Lung Model (1 available) Realistic depiction of human lung with open dissection to show internal routing of pulmonary arteries, veins, and airways. Pleura and lymph nodes are well represented. Measures 23 × 13.5 × 13.5 cm; on stand with base. Includes full-color, illustrated key.

Human Digestive System (1 available) Hubbard. Demonstrates basic organs of digestion: mouth, salivary glands, esophagus, stomach, liver, pancreas, intestine. Includes lesson plan. Size, 18 × 24".

Human Endocrine Organs (1 available) Altay®. About life size. This plaque mount features individual representations of pituitary, adrenal, thyroid, and parathyroid glands, plus a testis and a dissected ovary with fallopian tubes and associated structures. With key. Size, 53 × 38 cm.

Human Reflex Pathway (1 available) Altay®. Plaque mount shows sensory, neural, and motor components of a typical reflex arc. Pertinent structures are numbered and

referenced on the accompanying key. Size, 53 × 38 cm.

Human Heart (1 available) Altay®. Life size. Dissectible into 2 parts. Clearly shows internal and external anatomy including valves, cardiac chambers, and pulmonary and systemic vascular structures. All significant features are numbered; key included. Mounted on stand. Size (without stand), 14 × 10 × 9 cm.

Human Ear Model (1 available) Altay®. About 3× life size. Pinna, external ear canal, tympanum, auditory ossicles, Eustachian tube, vestibular apparatus, and cochlea are shown in exquisite detail along with neural, osseous, and vascular structures. The middle and inner ear components are removable for individual examination. Mounted on a durable polymer base. Numbered key is included. Size (without base), 32 × 19 × 13 cm.

Human Eye Model (1 available) 3× life size. Dissectible into vitreous humor, retina (anterior and posterior portions), and outer eye (2 parts). Size, 9 × 9 × 15 cm. On stand.

Miniature Torso Model (1 available) Altay®. Twelve-part miniature torso has removable head that opens to show internal structures, including detailed, removable half brain. Front portions of both lungs are removable, exposing pulmonary vasculature and respiratory airways (right lung) and general appearance of internal tissue (left lung). Other features include removable 2-part heart with valves and vascular connections, liver with gallbladder, and stomach. Intestinal assembly includes small and large intestines and pancreas. A small portion of the cecum and ileum can be removed to view the interior. Mounted on a durable polymer base. Size (without base), 48 × 24 × 13 cm.

Large Torso Model Grades 3 - 6 Fully developed, with 8 removable parts, these durable models will support your biology curriculum for many years at a significant savings over comparable products. Each model includes a manual with an overview of each anatomical system and 154 identified structures.

Demonstration Skeleton Grades 5 - 12 Precise detailing and a full range of motion make this 33" tall human skeleton model a top-quality value. Comes fully assembled with metal stand and reference sheet.

Animal X-Rays Set Grades 2 - 12 Examine authentic x-rays of animals right in your classroom! Students can examine the similarities and differences between mammals, reptiles, fish, amphibians, and birds. Includes 13 x-rays printed on clear, heavy-duty plastic. Ideal for use on light tables or just hold up to a window. Up to 8" x 10" each. Set of 13

Human X-Ray Print Set Grades 2 - 6 Examine authentic X-rays right in your classroom! By studying the X-rays, students can see how bones grow or heal, how teeth develop, and how food travels through an intestine. Includes a 12-page guide and 23 X-ray prints. 11 ¾" x 8 ¼"

Human Body Felt Set/ Blue Flannelboard

Grades 1 - 6 Teach the inner workings of the human body with this life-sized, high-quality, durable and washable felt model. This pre-cut set includes a 35" human body and 50 organ pieces. Organ pieces range in size from 3½" to 9½".

Stethoscope

(1 set -15 small, 10 large)

Grades K - 8 When studying the human body, nothing fascinates students more than giving them a chance to listen to their own heartbeats (alone or in pairs). The dual

teaching stethoscope is perfect for simultaneous listening by teacher and student. (Adult size)

Classifying Life Kit Grades 5 - 12 Students will become proficient at identifying the kingdom and phylum of life forms while studying a variety of illustrations and classifying them with a dichotomous key.

Flower Cell Model Grades 4 - 8 Students will enjoy studying this colorful and accurate representation of a flower. This colorful plaque provides a generalized cross section of a flowering plant for a detailed introduction to its structure and reproduction. Enlarged view with cut away sections shows-off the structure of a flower: stem, sepal, petal, stamen, and pistil. Includes a comprehensive key card. 9 3/4" x 2 1/2" x 12 3/4"

Dicotyledon Stem Model

Grades 6 - 12 Invite students to identify the internal structure of a stem. Modeled after a sunflower, this durable yet affordable model displays the anatomy of the stem in cross, radial, and tangential sections. The epidermis, phloem, cambium, xylem, pith,

and other vital structures are easily identified. Detailed key included. 13½" x 7" x 6"

Leaf Structure Model

Grades 6 - 12 Challenge students to identify the internal structure of a leaf. Constructed of durable plastic, this enlarged model features great detail of the transverse and longitudinal sections of a lima bean leaf. Both surfaces are shown with stomas and guard cells, and include additional detail of the xylem, phloem, and vascular veins. Includes detailed key for easy identification. 8" x18”

Book Plus Human Body Models

(1 set- 10 models) Grades 1 - 6 Your students will be fascinated with the intricate workings of the human body with these soft, colorful, hands-on anatomy models. Teaching models are designed with removable pieces that will help your students learn the structure, function and name of various parts of the human body. Each model includes a reproducible activity card with background information, teaching ideas, and extension activities. Models measure 10" x 14 ½" x ¾"and are made of safe EVA foam.

Chick Life Cycle Puzzle (1 set, 2 puzzles) Grades Pre-K - 3 Four puzzles in one! Young students put together each of the four wooden puzzle layers to see the different stages in the life cycle

of a chick hatching from an egg. Includes a total of 20 wooden pieces that are color-coded for easy sorting. Provides practice for eye-hand coordination and motor skills. 7" x 7"

Life Sequences Cards

Grades K - 4 These beautifully photographed card sets display the life stories of 5 different life forms, including the growth and development of an apple tree, butterfly, frog, hen, and mouse. Includes 40 cards measuring 6" x 8".

Straw Rocket Launcher (2 available) Students can design and build their own miniature straw rockets and test them on the Straw Rocket Launcher! Just like early rocket pioneer Robert Goddard, they can conduct scientific experiments by varying the trajectory angle and launch energy. Rockets can be launched to distances up to 50 feet!

The Straw Rocket Launcher features extremely simple operation. No power or air source is required; the pneumatic force is developed by releasing a

weighted drop rod in the cylinder. The force of the launch can be controlled by varying the release height of the rod.

Building straw rockets is a fun, inexpensive activity and a great way to introduce students to rocketry. Use with Precision Straws, sold separately. Recommended for use in a large, open indoor area, such as a gymnasium.

• Launches up to 50 feet

• Simple operation • Adjustable trajectory angle with angle gauge • No power or air source required • Clear tube displays internal parts • Adjustable launch force

Density Blocks Set (2 kits available, 5 sets in each kit) All the same sized blocks, but different weights! Allow students to compare mass vs. volume with this unique density set. Specimens include steel, aluminum, copper, brass, acrylic, nylon, pvc, oak, pine, and poplar. The blocks are 1" in size and come packaged in a wooden case for easy storage.

Magnet Center (1 available)

Here's a great addition to your classroom! As students inquire about the forces of magnets, they explore and discover some of the laws behind those forces with the materials provided. The center includes ten 1"

bar magnets, five 1 1/4" horseshoe magnets, 5 ring magnets, 10 magnetic marbles, two 2" tubes of iron filings, and several steel shapes, plus the WW-95-5920 Investigating Magnetism Poster. Suggested activities provided.

Magnetic Field Demonstrator (1 available) Conduct experiments without the mess of loose filings. Demonstrate lines of force and attraction and repulsion concepts by simply inserting a magnet into the hollow chamber. Includes a 2” x 3/8” magnet. Plastic cylinder measures 4” high.

Electrical Supply Kit Grades 4-8 In one handy tote box, Delta provides most supplies needed to explore the study of electricity. Included are battery holders, #48 bulbs, sockets, electrical clips, switches, insulated wire (12" #18 and 25' #20), wire stripper, and a teacher guide.

Lightning Ball

Grades 4 - 8 Safely create and manipulate lightning right in your classroom! Hairs will stand on end as students watch demonstrations about lightning and energy transfer. Charged particles respond to both touch and sound. 4" diameter

Simple Machines

Grades 5 - 8 Students explore Simple Machines with twelve hands-on activities and the Delta Science Reader. By measuring force as they lift, push, and pull loads, your class will determine the mathematical relationship between force and work. Students build and/or operate classroom versions of the six simple machines: lever, wheel and axle, pulley, inclined plane, wedge, and screw. They investigate how (and how much) each one makes work easier by magnifying, modifying, transferring, or changing the direction of the applied force. By calculating such factors as gear ratios and the negative effects of friction, students discover the tradeoff between force and distance. Students also identify and examine household or other everyday simple machines.

In the Delta Science Reader Simple Machines, students explore the world of simple machines and the energy that makes them work. Students read about the six simple machines the inclined plane, the lever, the wheel and axle, the pulley, the wedge, and the screw and understand the difference between simple and compound machines. In biographical sketches, students meet ancient Greek mathematician Archimedes and modern inventor Lillian Gilbreth, and discover how they put simple machines to work. Students also read about the scientific formula for calculating work, the many levers in the human body, and how a roller coaster work

Work, Force, and Motion Models

Grades 3 - 8 Meticulously crafted, high-performance, wooden models demonstrate and reinforce the basic principals of work, force, and motion. Through hands-on exploration, students gain knowledge on how machines reduce work, convert energy, and redirect force. Each student model is approximately 7" x 16".

Plastic Tubing ( 4 available: 2 10ft. x ¾ “, 2 10ft. x 1”) Clear, plastic tubing. Use with steel balls and marbles to demonstrate roller coaster science.

Steel Balls ( ½” and ¾” diameter, 40 of each) Steel balls are great for rolling, spinning, and looping their way through Rube Goldberg devices.

Marbles (White, blue and green, 100 each)

Color and Light

Grades 5 - 8 Students use prisms to investigate the full range of colors in white light, called the visible spectrum. They experiment with subtractive color mixing and discover the significance of the primary pigments. Students

separate pigments with paper chromatography and then combine colors by blending filtered light beams. Experiences with both subtractive and additive mixing help students understand the role of the eyes and brain in perceiving color. That understanding is extended as students identify the dot patterns in printed pictures and manipulate color filters to make colors disappear. Students also explore afterimages and phantom images, turn two-dimensional drawings into three-dimensional drawings, and demonstrate persistence of vision.

In the Delta Science Reader Color and Light, students read about different aspects of light and color. They discover that different surfaces and substances reflect, absorb, and refract light. They learn how we see things in general and how we see color in particular. They also read about a famous astronomer, Annie Jump Cannon, and her work with stellar spectra. Finally, students learn about color blindness.

Sink or Float? (1 available)

Grades K-2 Students explore why different objects sink or float. They read about the concept of buoyancy. They find out about matter and the tiny atoms that make up everything. They learn about the physical properties of solids, liquids, and gases and discover which properties allow different solids, liquids, and gases to float.

Lenses and Mirrors (1 available) Grades 5-8 By creating such devices as pinhole viewers and mirror mazes, your students manipulate images and shed light on the otherwise mysterious concepts of reflection and refraction. Students experiment with a variety of mirrors and lenses: flat, hinged, concave, and convex. They test hypotheses about the size, position, and orientation of images, and even whether the images are real or virtual. As a practical application, students investigate the ultimate optical instrument, the human eye, and test one another’s eyesight.

States of Matter

Grades 2 - 5 Students explore States of Matter through twelve hands-on activities and the Delta Science Reader. Help your students begin to see ,and classify, the objects in the world around them, not as primary school children but as young scientists. Students use hands-on experiences with blocks, balloons, and beakers to identify the distinctive properties of the three common states of matter. With a variety of lab tools they observe, explore, and measure solids, liquids, and gases, and investigate the processes by which one changes into another. As students conduct melting, freezing, evaporation, and condensation experiments, they learn the importance of controlling variables and keeping records. To conclude the unit, the class can celebrate by making ice cream for a "Matter Matters" party.

The Delta Science Reader States of Matter introduces students to matter and its physical properties. Students learn about three states of matter: solid, liquid, and gas. They read about changing from one state to another by melting, freezing, evaporation, and condensation. Students meet two scientists who work with matter in different states?one at a crayon factory and another in Antarctica. Finally, they discover how heating gases keeps a hot air balloon afloat.

Sound

Grades 3 - 5 Students explore how sounds are produced and how the sense of hearing detects and interprets sounds. Sound surrounds us, in fact, students will discover that they cannot create silence. They use tuning forks to see and feel the vibrations that are sound waves. Next, students make ear trumpets to catch and amplify sounds just as ears do. They experiment with echoes to see which surfaces absorb or reflect sound waves. They even get a chance to make music. Students model percussion, stringed, and wind instruments as they create sounds by striking, plucking, and blowing. They learn to vary pitch and volume by varying string thickness and tension. For a concluding concert, students tune an orchestra of original instruments.

In the Delta Science Reader Sound, students read about what causes sound, how sound travels, and how sounds are different. They learn how our voices and ears work to allow us to speak and hear. They discover how different types of musical instruments make sounds. They also read about audiologists, people who test hearing. Finally, students find out how certain animals use echolocation to find out about their surroundings.

The Elements DVD Grades 5 - 12 Trace the evolution of chemistry from the Greeks to the present day. This video reveals how early scientists turned alchemy into chemistry and designed the periodic table. 54 minutes

Large Classroom Thermometers (4 available) This wall-mounted thermometer for indoor or outdoor use is made of durable plastic and is alcohol filled. Large display makes it easy to read. Range, –40 to 50° C and –40 to 120° F. Size, 20" L × 4 1/2" W.

Celsius/Fahrenheit Demonstration Thermometer (2 available)

Grades K - 6 Big enough to use at the front of the classroom, these thermometers feature a movable, easy-to-read, tear-proof temperature gauge. 5" x 35"

Plastic Student Thermometers (80 available) A 6 3/4" plastic thermometer with red alcohol tube recessed in molded plastic to help prevent breakage. Resistant to both chemicals and heat. Two ranges are available.

Microslide Viewer (2 cases, 10 microslide viewers per case)

Afraid to leave your students alone with a microscope? Unlike a microscope, this rugged little viewer is practically indestructible. The no-maintenance, 9″ viewer is constructed of high-impact styrene, with no painted or removable parts to chip, break, or lose. You need no special lighting or electricity to view the amazing Microslide 35 mm image strips. Two adjusting knobs give sharp focus, while the white reflector base assures a bright image.

Microslides Cells of Plants and Animals Microslides (1 set of 10 available)

Contents: Cheek lining cells (st, 900X) • Onion skin cells (st, 110X) • Spirogyra cell (175X) • Amoeba (250X) • Green leaf cells (st, 275X) • Wood cells (st, 40X) • Bone cells (st, 300X) • Brain cells (st, 300X). Lesson plan/study guide included.

Animal Mitosis Microslides (1 set of 10 available)

Contents: Zygote (cs, st, 750X) • Prometaphase (cs, st, 750X) • Metaphase (cs, st, 750X) • Metaphase, polar view (cs, st, 750X) • Early anaphase (cs, st, 750X) • Anaphase (cs, st, 750X) • Telophase (cs, st, 750X) • Late telophase (cs, st, 750X). Lesson plan/study guide included. Plant Mitosis Microslides (1 set of 10 available)

Contents: Early prophase (ls, st, 1,000X) • Prophase (ls, st, 1,000X) • Metaphase (ls, st, 1,000X) • Early anaphase (ls, st, 1,000X) • Anaphase (ls, st, 1,000X) • Late anaphase (ls, st, 1,000X) • Telophase (ls, st, 1,000X) • Late telophase (ls, st, 1,000X). Lesson plan/study guide included. Asexual Reproduction Micoslides (1 set of 10 available)

Contents: • Binary fission, Paramecium (wm, st, 100X) • Budding, yeast (wm, st, 900X) • Budding, Hydra, living (25X) • Sporulation, yeast (wm, st, 1,200X) • Sporulation, bread mold, living (10X) • Sporulation, fern (cs, st, 300X) • Regeneration, Planaria, living (5X) • Vegetative propagation, Pick-a-back plant (1X). Lesson plan/study guide included. Meiosis Microslides (1 set of 10 available)

Contents: Primary oocyte, tetrads formed (750X) • Primary oocyte, dyads separated (750X) • Primary oocyte, tetrads on spindle (750X) • Primary oocyte first polar body forming (750X) • Secondary oocyte chromosomes formed (750X) • Mature egg (750X) • Pronucleus stage (750X) • Zygote ready for first cleavage (750X). Lesson plan/study guide included. Your Body Micoslides (1 set of 10 available)

Contents: • Small intestine (50X) • Bronchial tree • Heart (cs, 6X) • Bone (cs, 150X); Muscle (cs, 900X) • Neuron (cs, 400X) • Pancreas gland (190X) • Skin (cs, 80X) • White blood cells (em, 25,000X). Lesson plan/study guide included. Cell Structure Microslides (1 set of 10 available)

Contents: Cork (wm, 300X) • Onion skin (wm, st, 200X) • Green leaf (cs, st, 300X) • Cheek cells (wm, st, 900X) • Blood cells (sm, st, 900X) • Nerve cells (cs, st, 300X) • Bacteria (sm, st, 1,500X) • Virus (wm, 50,000X). Lesson plan/study included. Photosynthesis Microslides (1 set of 10 available)

Contents: • Green leaf (cs, st, 110X) • Green leaf (cs, st, 350X) • Root hair (wm, st, 35X) • Vascular bundles (cs, st, 145X) • Leaf, with and without sunlight (wm, st, 35X) • Leaf, variegated (wm, 135X) • Bean seed (wm, st, 2X). Lesson plan/study guide included. Chromosomes and Genes in Action Microslides (1 set of 10 available)

Contents: • DNA molecule (em, 55,000X) • Coiling in chromosomes (wm, 2,000X) • Lampbrush chromosomes (pc, 700X) • Loop of lampbrush chromosomes (em, 9,000X/15,000X) • Giant chromosomes (wm, 1,000X) • Chromosomes puffs, stained (250X); Chromosome puffs, tagged (250X) • Nuclear pores (em, 50,000X) • Ribosomes (em, 85,000X). Lesson plan/study guide included.

Magnifying Glass – (1 set of 30) Feature 2X magnification and heavy plastic handles for long-lasting durability. (2.5”/10, 3”/20)

Plastic Funnel (6 available) 125 mm in diameter

Plastic Funnels ( 3 sets available)

Set of 3 in 35mm, 52mm, and 65mm diameter

Student Balance (2 sets of 3 available)

An excellent choice for all levels, our remarkably accurate balance has a 2000g capacity, yet is sensitive to 1g. Includes 8-piece brass gram mass set.

Student Balance (1 Set of 15)

These two-piece balances set up easily, stack and store neatly. Allows everyone to participate!

Hexagram™ Weight Set (20 sets available)

Durable and accurate, these plastic hexagrams are color-coded to help children see mass relationships at a glance. Set of 54 includes: twenty 1g units, twenty 5g units, ten 10g units, and four 20g units.

Measurement Kit (1 set available) Build students' competence with measurement by using real tools to measure real objects. Set includes 6

balances, 5 nesting mass sets, 12 dual-scale thermometers, 1 overhead dual-scale thermometer, 1 demonstration dual-scale thermometer, 10 dual-scale measuring tapes, five 250-ml plastic measuring cups, and 5 standard measuring cup sets, all stored in a clear plastic bin.

Measurement in the Laboratory Kit (1 set)

Students master the common measurement skills used in the

science laboratory through skill-oriented explorations, and learn about the metric system, mass, volume, density, gravity, temperature and pH. Builds an understanding of how to gather information, graph and analyze data and interpret scientific diagrams.

Safety Goggle Kit (2 kits available) Elementary Demonstrate the importance of safety in your classroom or lab with this convenient safety kit. Enclosed in a sturdy tub are one adult-sized and 30 student-sized goggles. Also includes lens paper, cleaning solution and disinfectant, safety sign, name labels, marking pen, and goggle storage bags.

Safety Goggle Kit (1 available) Middle School Keep all your students’ protective eyewear together in one complete kit! Includes 31 Standard Goggles, labels, disinfectant,

goggle cleaning solution, resealable bags, and a safety sign. All materials are packaged in a handy plastic tote. Valuable safety information is also provided.

Metric Graduated Beaker Set (12 sets available) Beakers with molded pouring lips measure 50 mL, 100 mL, 250 mL, 600 mL, and 1000 mL. Made of strong polypropylene, they nest together for storing. Set of 5

Graduated Measuring Cylinders (12 sets available)

Durable polypropylene cylinders are autoclavable and capable of withstanding even strong acids and bases. Cylinders feature easy-pour spouts and easy-to-read graduations.