Grade 3 · Science · Building Confidence
Free Human Body & Health worksheet - version 11
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-1MCPIEV-L51E
1.Why do people need sleep?
2.Why is a balanced diet useful?
3.Name one job of the skeleton.
4.Which system sends messages through nerves?
5.What do muscles do?
6.How do vaccines help?
7.Which cells carry oxygen?
8.What is the immune system's job?
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 11
- Why do people need sleep?To help the body and brain recover
- Why is a balanced diet useful?It supplies varied nutrients
- Name one job of the skeleton.Support and protect the body
- Which system sends messages through nerves?The nervous system
- What do muscles do?They contract to move body parts
- How do vaccines help?They prepare immunity to recognize a pathogen
- Which cells carry oxygen?Red blood cells
- What is the immune system's job?Defend against harmful pathogens
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.