The Brain: Your Command Center (Part 2)

What You'll Learn

The brain is the control center of the nervous system. It processes information from the senses, controls movement, stores memories, and manages body functions like breathing.

Key Words

neuron
receptor
stimulus

Materials Needed

sponge
water
blindfold
cotton balls

Safety First

Wash hands after handling materials.
Be careful with scissors — ask an adult for help if needed.

Steps

Step 1 — Read

Read about The Human Body and write down three key facts.

Step 2 — Do

Build a model arm using cardboard tubes, string (tendons), and rubber bands (muscles). Show how muscles work in pairs to bend and straighten the elbow.

Step 3 — Observe

Compare the before and after states.

Step 4 — Record

Write your conclusion: did the results match your hypothesis? What would you change next time?

Check Your Understanding

Question 1

1 of 3

How many bones does an adult human have?