Grade 3 · Science · On Level
Free Human Body & Health worksheet - version 12
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-ULUW14-N3A3
1.How do vaccines help?
2.What is the immune system's job?
3.Which cells carry oxygen?
4.What do muscles do?
5.Name one job of the skeleton.
6.Why do people need sleep?
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 12
- How do vaccines help?They prepare immunity to recognize a pathogen
- What is the immune system's job?Defend against harmful pathogens
- Which cells carry oxygen?Red blood cells
- What do muscles do?They contract to move body parts
- Name one job of the skeleton.Support and protect the body
- Why do people need sleep?To help the body and brain recover
- 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.