Warm-up

Pre-test

Perimeter, Area, Volume and Surface Area

Review of vocabulary and formulas

Objectives

Know the definitions of perimeter, area, volume and surface area

Understand units, square units, and cubic units and how they relate to perimeter, area and volume

Use formulas to calculate perimeter, area, volume, and surface area

Roll the Dice

Roll the dice and define the geometry vocabulary word next to your number.

Dice Roll Number Match11. Circle12. Cube13. Prism14. Cone15. Pyramid16. Cylinder17. Triangle18. Trapezoid19. Rectangle20. Sphere

1. Area2. Circumference3. Perimeter4. Surface Area5. Volume6. Cubic Unit7. Square Unit8. Unit9. Radius 10. Diameter

Perimeter

Measure of the distance around a figure (polygon) made up of straight lines called sides (s, or l & w)

Square, triangle, rectangle, trapezoid, etc. or an irregular 2-D (flat) multi-sided shape.

Circle Perimeter?

If the shape has curved lines instead of straight we call it Circumference. Use radius (r)- distance from the center

to the edge of the circle diameter (d) – distance across the circle

passing through the center d = 2r or r = ½ d

Units

Standard or metric Measurement of the side or distance Perimeter and circumference

Square units

Area – measure of a shape’s (2-D Flat figures) surface, space inside the perimeter

Why do we call it “square”? ?

Area

PSSA Formula Sheet 2-D figures – Square, parallelogram,

rectangle, triangle, trapezoid, circle, and regular & irregular polygons

How do you find area of a figure that doesn’t have a formula?

Check-up – Perimeter, Circumference and Area

Handout of examples Lesson Practice: Perimeter,

Circumference, & Area

Calculating Surface Area

Some formulas – cube, rectangular prism, sphere, & cylinder

No Formula? Find area of each face and add to find

the total surface area

What unit is used for Surface Area?

Area of each shape that makes up a 3-D solid how much exposed area a solid object

has Answer: Square units

Check-up – Surface Area

Handout of examples Lesson Practice – Surface Area

Cubic Units

Volume: how much three-dimensional (3-D) space a solid occupies

Why do we call it “Cubic”?

?

Volume Formulas

PSSA Formula sheet Prism, Cone, Pyramid, cylinder (many

types), & sphere

Check-up - Volume

Handout of examples Lesson Practice - Volume

More Practice – if you need it

Measuring Around What happened when Orgo tore up a

PUZZLE Book? Surface Area of Rectangular Prisms Comparing Volumes

Ticket out the Door

Post-Test – same as Pre-test???