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Human Body & Health

Grade 1 · Stretch challenge · 8 questions · Version PG-E4K5FU-1O66

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1.Which cells carry oxygen?
2.Where does digestion begin?
3.What do muscles do?
4.Which system sends messages through nerves?
5.What do kidneys remove from blood?
6.Name one job of the skeleton.
7.Why do people need sleep?
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 7
  1. Which cells carry oxygen?Red blood cells
  2. Where does digestion begin?In the mouth
  3. What do muscles do?They contract to move body parts
  4. Which system sends messages through nerves?The nervous system
  5. What do kidneys remove from blood?Wastes and extra water
  6. Name one job of the skeleton.Support and protect the body
  7. Why do people need sleep?To help the body and brain recover
  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.