Grade 3 · Science · Building Confidence
Free Human Body & Health worksheet - version 3
Grade 3 human body & health practice with original questions, explanations, and difficulty-matched printable versions. This printable version includes 8 grade-appropriate questions and a separate answer sheet.
Human Body & Health
Grade 3 · Building confidence · 8 questions · Version PG-1QQDJKY-L51E
1.What do muscles do?
2.Why do people need sleep?
3.Why is a balanced diet useful?
4.Which cells carry oxygen?
5.How do vaccines help?
6.What is the immune system's job?
7.Which system sends messages through nerves?
8.What do kidneys remove from blood?
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 3
- What do muscles do?They contract to move body parts
- Why do people need sleep?To help the body and brain recover
- Why is a balanced diet useful?It supplies varied nutrients
- Which cells carry oxygen?Red blood cells
- How do vaccines help?They prepare immunity to recognize a pathogen
- What is the immune system's job?Defend against harmful pathogens
- Which system sends messages through nerves?The nervous system
- What do kidneys remove from blood?Wastes and extra water
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.