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Human Body & Health

Grade 2 · Stretch challenge · 8 questions · Version PG-U89X4V-11AV

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

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 7
  1. What do muscles do?They contract to move body parts
  2. How do vaccines help?They prepare immunity to recognize a pathogen
  3. Which cells carry oxygen?Red blood cells
  4. Why do people need sleep?To help the body and brain recover
  5. Where does digestion begin?In the mouth
  6. Why is a balanced diet useful?It supplies varied nutrients
  7. Name one job of the skeleton.Support and protect the body
  8. Which system sends messages through nerves?The nervous system

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.