Grade 3 · Science · On Level
Free Human Body & Health worksheet - version 18
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-SXX9VA-N3A3
1.Which system sends messages through nerves?
2.How do vaccines help?
3.What do kidneys remove from blood?
4.Which cells carry oxygen?
5.Why do people need sleep?
6.Why is a balanced diet useful?
7.Where does digestion begin?
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 18
- Which system sends messages through nerves?The nervous system
- How do vaccines help?They prepare immunity to recognize a pathogen
- What do kidneys remove from blood?Wastes and extra water
- Which cells carry oxygen?Red blood cells
- Why do people need sleep?To help the body and brain recover
- Why is a balanced diet useful?It supplies varied nutrients
- Where does digestion begin?In the mouth
- 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.