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Human Body & Health

Grade 3 · On-level practice · 8 questions · Version PG-19G1SQ3-N3A3

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1.What do kidneys remove from blood?
2.Why do people need sleep?
3.Why is a balanced diet useful?
4.Name one job of the skeleton.
5.What do muscles do?
6.What is the immune system's job?
7.Which system sends messages through nerves?
8.Where does digestion begin?

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 6
  1. What do kidneys remove from blood?Wastes and extra water
  2. Why do people need sleep?To help the body and brain recover
  3. Why is a balanced diet useful?It supplies varied nutrients
  4. Name one job of the skeleton.Support and protect the body
  5. What do muscles do?They contract to move body parts
  6. What is the immune system's job?Defend against harmful pathogens
  7. Which system sends messages through nerves?The nervous system
  8. Where does digestion begin?In the mouth

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.