A Reproduced Lesson Plan in Science 10

Prepared by: Henry B. Sergio JrMarch 12, 2016 Grade 10-Mglg

I. Learning Objectives

II. Learning Content III. Learning Procedure IV. Evaluation V. Assignment

Through the Nervous Trip Activity, the students should be able to:

A. describe the structure and functions of neurons or nerve cells;

B. distinguish the parts of the nervous system;

C. illustrate how the peripheral and central nervous systems work and;

D. correlate the functions of the nervous system with that of other body systems.

A. Subject matter:Nervous System

B. Reference: Capco M.C. et al.

(2005) You and the natural world series science and technology biology. Phoenix Publishing House, Inc. Quezon Avenue, Quezon City

Grade 10 K-12 Teacher’s Guide

C. Materials:-LCD Projector-Ruler

D. Concepts:1. Nervous system- connects all body parts and transmits signals from one part to another subdivided into CNS and PNS. 2. The nerve cell (neurons) is the basic unit of the NS capable of transmitting impulse from one neuron to another.

A. Motivation1. Ask a student to answer the following square root problem:a. √ 9 = 3b. √4 = 2c .√1 = 1d .√121 = 11e. √ 64 =8

2. Ask a student the following questions:a. What do you call a car with one tire? = unicycleb. With two tires? = bicyclec. With three tires? = tricycled. With four tires? = quad cycle

3. Ask three volunteers from the class. Instruct them the following actions. *Brain- two hands holding the head*Heart- the hands resembling a heart shape at the chest level*Touch- hands stretched sideward.

4. Let the volunteer students memorize the pattern of the actions based on the given command.

5. Tell the volunteer students to listen carefully to the command and consistently follow the actions executed. Do this second time in a fast manner.

B. Presentation

(see attached copy) On a short bond paper, illustrate using a diagram the coordinated functions of the Nervous, Reproductive and Endocrine systems. Submit it on March 21, 2016-Monday.

Criteria:Neatness- 5Creativity-5Organization of thought-5Correctness-5

Total: 20 pts

The brain as we know is the master organ of the body. It controls almost all bodily functions even if we are awake or not. Our body responds to the environment automatically and these responses are needed in order for us to survive. Class, our topic for today is about the Nervous System.

D. Skills:1. Describing the structure and functions of the NS. 2. Illustrating the work of the CNS and PNS. 3. Correlating NS to other body systems.

1. Give the general functions of the nervous system.

2. Present the major divisions of the Nervous system and their functions.

3. Based from the presentation of the major divisions of the NS, let the students fill out the diagram below.

1. It receives information about the environment outside and inside the body. 2. It interprets information gathered. 3. It makes the body respond or react to the information.

4. Post a picture of a Neuron and its major parts.

5. Describe the Neuron and its parts based on function.

6. Have the students watch a video presentation of an action potential by a neuron.

https://www.youtube.com/watch?v=ifD1YG07fB8

Neuron- carries out impulses or electric signals. Main Parts:

a. Dendrites- receives stimulation from the body parts or environment b. Cell body- composes the cell organelles.c. Axon- carries impulses away from the cell body. It is the site of action potential.

7. Tell the class that they will have an activity entitled “How fast is your Reaction?” and they need to prepare a ruler and writing materials.

8. Ask the class to find a partner for this activity and construct on a ½ sheet of pad paper a table of results just like below.

9. Give the instructions to the students for the activity.

TrialsCentimeters where the ruler fell

Eyes Open Eyes CloseRight Hand Left Hand Right Hand Left Hand

1st

2nd

3rd

4th

5th

Ave.

a. Have your partner hold a metric ruler at its end with the highest number in cm. b. Place the thumb and forefinger of your left hand close to, but not touching, the end with the lowest number. c. When your partner drops the ruler, try to catch it between your thumb and finger.

d. Record where the top of your thumb is, when you catch the ruler. This number gives how many centimeters the ruler fell. e. Repeat steps 2 to 5 five more times and record the measurements on the data table that you have constructed earlier.f. Repeat steps 2 to 5 five more times using your right hand to catch the ruler. g. Repeat steps 2 to 5 five more times using your left hand with your eyes closed. Your partner will signal you by saying “now” when the ruler drops.h. Repeat steps 2 to 5 five more times using your right hand with your eyes closed. Record your data and observations.i. Exchange tasks and drop the ruler for your partner. j. To complete your data chart, change all the centimeters to seconds by multiplying by 0.01. k. After recording all the data, compute for the average by adding up the measurements of all the trials and dividing it by the number of trials

10. Process the activity by asking the following questions:

Q1. Did you catch the ruler faster with your eyes open or closed?

Q2. Explain why a message moving along nerve pathways takes time.

Q3. Describe the nerve pathway that the message followed when you saw the ruler fall.

The ruler was caught faster with eyes open.

The message travels from one neuron to another until it reaches the brain. Then, the brain’s response is also transmitted by another set of neurons.

First, the eye sees the ruler, and then sends a message to the brain. The brain sends a response through the muscles in the hand. Finally, the muscles contract to allow the person to catch the ruler.

C. Application1. Introduce the class to an activity entitled: “A Nervous Trip”2. Tell the class to form a team of 8-10 members.

3. Present the game set-up of the relay course.

4. Give the guidelines of the game.

-Among the members of the group, assign students who will represent the following parts: Brain, Organ, Sensory Neurons, and Motor Neurons. -Have the “Brain” stand at one end of the classroom, and the “Organ” at the other end near the blackboard.-Let three to four members representing “Sensory Neurons” stand and line up between the “Brain” and the “Organ.” Another set of three to four members representing “Motor Neurons” will stand and line up facing the “Sensory Neurons.”

A. The teacher will show a card to the first member of the group, who is the “Organ.” Each card will depict a situation of a stimulus affecting an organ.B. The “Organ” must pass the message to one “Sensory Neuron” by whispering.Each member who receives the message must relay it to another until it reaches the last “Sensory Neuron.” C. Let the last person in the “Sensory Neuron” group run to the “Brain” to communicate the message that was transmitted from the “Organ.”

D. The “Brain” must think of a reaction to the stimulus presented and pass this response to the “Motor Neurons.”E. Each member of the “Motor Neuron” group who receives the response from the brain must relay it to another until it reaches the last person in the group.F. The “Organ” will receive this response through the “Motor Neurons” and run quickly to the board to write the response. G. The team with the most acceptable answer and the shortest time of trip will win the game

5. Process the activity by asking the following questions:

Q1. How will you differentiate the sensory and motor neurons based on their functions?

Q2. Based on the simulation activity, explain how information travels in the nervous system.

D. GeneralizationWhat could be concluded from our topic in the Nervous System?

Evaluation:

The sensory neurons transmit impulses from the receptor to the brain while the motor neurons transmit impulses from the brain to the effector.

Information travels in the nervous system through the neurons that transmit the impulse. The sense organ receives the message, and the information is sent by the sensory neurons to the brain. The brain then processes the information and sends a response through the motor

When a receptor such as an organ perceives a stimulus, the impulse is sent to the brain by the sensory neurons, which then transmit information from one nerve cell to another. As the message reaches the brain, it processes the information and commands an effector such as a muscle or an organ to respond. The message coming from the brain is sent through the motor neurons.

MULTIPLE CHOICE. Choose the letter of the best answer. Encircle the letter of your choice. (20 pts)1. When you exercise, the nerves in your muscle signal your Respiratory system to breathe in more rapidly. Why?A. because your body tells you to do so. C. because you’re tired.B. because your body needs more oxygen. D. because it is necessary. 2. The following are the functions of the Nervous system except:A. Maintain homeostasis. C. Receive information outside and inside the body. B. Posture and framework. D. Interpret information gathered to give feedback.3. Brenda Mage was badly hurt from a fall. After sometime, it was observed that she cannot hear well but based on the analysis of her ears, the ear drum is still intact. What possible part of the brain was damaged from the fall?A. Parietal lobe C. Temporal lobeB. Occipital lobe D. Frontal lobe4. Dikko Ammo’s vision went blurry and passes out when he was hit by a baseball bat. What region of the brain was hit?A. Parietal lobe C. Temporal lobeB. Occipital lobe D. Frontal lobe5. When we are asleep, some bodily functions such as breathing, digestion, heart rate and blood pressure do not stop. What part of the brain is responsible for this?A. Cerebellum C. HypothalamusB. Cerebrum D. Brain stem

6. Balance and coordination is controlled by this part of the brain. A. Cerebellum C. HypothalamusB. Cerebrum D. Brain stem7. What happens to the digestive activity in times of fear?A. Digestive activity is inhibited. C. Digestive activity is contracted. B. Digestive activity is the same. D. Digestive activity is stimulated. For numbers 8-12, analyze well the situation and decide whether it is sympathetic or parasympathetic response. Write A if PARASYMPATHETIC and letter C if SYPATHETIC. 8. When in a dark room, the pupil of the eye dilates.9. After being caught in a fire, Dikko Ammo’s heart beat went back to its normal rhythm and his blood pressure is stabled. 10. Summer time and Jack Ibagbaga enjoys the mangoes of Zambales. When Rita saw Jack eating mangoes, she instantly began to salivate.

11. The bronchi are relaxed. 12. The sex organs are stimulated. For numbers 13-16, match the role of the major divisions of the Nervous System. A-Central NS B-Somatic NS C. Autonomic NS D. Peripheral NS13. A stimulus was perceived by the sense of sight. 14. A response was quickly delivered to the stimulus. 15. A person’s heart still beats when asleep so does his breathing and digestive activity is still working. 16. It is the processing and interpretation center. 17. It is the basic unit of the nervous system. A. Neuron B. Dendrites C. Central NS D. Peripheral NS 18. What is the difference between the dendrites and axon in terms if carrying impulse?

A. Dendrites carry impulse away from the cell body while the axon carries impulse toward the cell body. B. Dendrites carry impulse toward the cell body while the axon carries impulse away from the cell body. C. Axon and Dendrites carry the impulse away from the cell body. D. Axon and dendrites carry impulse toward the cell body. 19. Which is NOT true about a nerve impulse?A. A nerve impulse is a combination of an electrical charge and chemical reaction. B. A nerve impulse is not a flow of electricity, but an electrochemical signal moving along a neuron. C. A nerve impulse cannot jump from one neuron to another. D. When nerve impulse begins, it produces the chemical called neurotransmitter. 20. A boy sees a snake on his way home; arrange the reaction of the body to the snake seen by the boy. 1. Response 2. Stimulus 3. Sensory neurons 4. CNS 5. PNS 6. Motor neuronsA. 1, 2, 3, 4, 5 & 6 B. 2, 3, 5, 4, 6 & 1 C. 2, 3, 4, 6, 5 & 1 D. 6, 5, 4, 3, 2, & 1