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Human Body & Health

Grade 3 · On-level practice · 8 questions · Version PG-19Q1EF2-N3A3

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1.What do muscles do?
2.Where does digestion begin?
3.Why do people need sleep?
4.Why is a balanced diet useful?
5.What do kidneys remove from blood?
6.Which cells carry oxygen?
7.Name one job of the skeleton.
8.How do vaccines help?

Answers and teaching notes

Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.

Show answers for version 5
  1. What do muscles do?They contract to move body parts
  2. Where does digestion begin?In the mouth
  3. Why do people need sleep?To help the body and brain recover
  4. Why is a balanced diet useful?It supplies varied nutrients
  5. What do kidneys remove from blood?Wastes and extra water
  6. Which cells carry oxygen?Red blood cells
  7. Name one job of the skeleton.Support and protect the body
  8. How do vaccines help?They prepare immunity to recognize a pathogen

Worked example

Connect a structure to its function and explain how body systems work together.

Common mistake

Naming an organ without explaining its system role.

Helpful hint

Trace what enters, changes, and leaves the system.