The Brain: Your Command Center

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

textured objects
timer
ruler
paper
markers

Safety First

Do not mix unknown chemicals together.
Tie back long hair before starting the experiment.

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?