Grade 3 · Science · Building Confidence
Free Human Body & Health worksheet - version 6
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-1PWEQI1-L51E
1.What is the immune system's job?
2.How do vaccines help?
3.Why do people need sleep?
4.What do muscles do?
5.Where does digestion begin?
6.Name one job of the skeleton.
7.Which cells carry oxygen?
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 6
- What is the immune system's job?Defend against harmful pathogens
- How do vaccines help?They prepare immunity to recognize a pathogen
- Why do people need sleep?To help the body and brain recover
- What do muscles do?They contract to move body parts
- Where does digestion begin?In the mouth
- Name one job of the skeleton.Support and protect the body
- Which cells carry oxygen?Red blood cells
- 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.