👩‍🏫 Teacher’s Guide

Objective
Students will explain the functions of eyes, teeth, and hair and compare how these body parts protect, sense, and support health.

Vocabulary
pupil, iris, enamel, cavity, root, strand, color, protect

Teaching Notes

• Start by asking students to name body parts on the head and what each does.
• Demonstrate how pupils get bigger or smaller by dimming lights.
• Use a model or drawing to show a tooth’s enamel and root.
• Discuss how hair protects the head and helps with warmth.
• Reinforce body‑care habits: brushing teeth, washing hair, and resting eyes.

🧒 Student Worksheet

Concept and Helping Material

Big Idea.
Our eyes, teeth, and hair help us see, eat, stay safe, and stay healthy.

• Eyes help us see light, color, and movement. The pupil takes in light. The iris controls how much light enters.
• Teeth help us bite and chew food. The outside is covered with enamel, which is very strong. A hole in a tooth is called a cavity.
• Hair grows in strands. It protects the head from sun, dust, and cold.

Vocabulary and Definition

• — the dark center of the eye that lets in light
• — the colored circle around the pupil
• — the hard outer layer of a tooth
• — a small hole that forms when a tooth is damaged
• — a single piece of hair
• — to keep something safe

Words to Learn

, , , , ,

Sentences to Fill In

1. The ________ lets light into the eye.
2. The colored part of the eye is the ________.
3. The hard coating on a tooth is called ________.
4. A hole in a tooth is called a ________.
5. A single hair is called a ________.
6. Hair helps ________ the head.

Think & Respond Q&A

1. Why do we have two eyes?
2. Why should we rest our eyes?
3. How do teeth help our bodies?
4. Why is enamel important?
5. What causes cavities?
6. How does hair protect us?
7. Why do people have different hair colors?
8. What might happen if we never brushed our teeth?
9. What is one way to care for your eyes?
10. Why is hair washing important?

Hands-On Experiment or Activities

What You Need: mirror, flashlight, apple or cracker
What You Do:

1. Look in a mirror and find your pupil and iris.
2. Shine a light near your eye (not directly) and watch the pupil change size.
3. Bite an apple/cracker and observe how the teeth work.

Reflection

• What did you learn about caring for teeth?
• What did you learn about eyes?
• What did you learn about hair?