Grade 3 · Science · On Level
Free Human Body & Health worksheet - version 20
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 · On-level practice · 8 questions · Version PG-1T0C8XX-N3A3
1.How do vaccines help?
2.Name one job of the skeleton.
3.Which cells carry oxygen?
4.Why do people need sleep?
5.Which system sends messages through nerves?
6.What is the immune system's job?
7.Where does digestion begin?
8.What do muscles do?
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 20
- How do vaccines help?They prepare immunity to recognize a pathogen
- Name one job of the skeleton.Support and protect the body
- Which cells carry oxygen?Red blood cells
- Why do people need sleep?To help the body and brain recover
- Which system sends messages through nerves?The nervous system
- What is the immune system's job?Defend against harmful pathogens
- Where does digestion begin?In the mouth
- What do muscles do?They contract to move body parts
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.