Grade 3 · Science · On Level
Free Human Body & Health worksheet - version 19
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-T7WVK9-N3A3
1.Which system sends messages through nerves?
2.Why is a balanced diet useful?
3.What do muscles do?
4.Where does digestion begin?
5.Why do people need sleep?
6.What do kidneys remove from blood?
7.What is the immune system's job?
8.How do vaccines help?
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 19
- Which system sends messages through nerves?The nervous system
- Why is a balanced diet useful?It supplies varied nutrients
- What do muscles do?They contract to move body parts
- Where does digestion begin?In the mouth
- Why do people need sleep?To help the body and brain recover
- What do kidneys remove from blood?Wastes and extra water
- What is the immune system's job?Defend against harmful pathogens
- How do vaccines help?They prepare immunity to recognize a pathogen
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.