Grade 3 · Science · Building Confidence
Free Human Body & Health worksheet - version 17
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-1LSQB0X-L51E
1.Which system sends messages through nerves?
2.Which cells carry oxygen?
3.How do vaccines help?
4.Why do people need sleep?
5.Where does digestion begin?
6.Name one job of the skeleton.
7.What do kidneys remove from blood?
8.Why is a balanced diet useful?
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 17
- Which system sends messages through nerves?The nervous system
- Which cells carry oxygen?Red blood cells
- How do vaccines help?They prepare immunity to recognize a pathogen
- Why do people need sleep?To help the body and brain recover
- Where does digestion begin?In the mouth
- Name one job of the skeleton.Support and protect the body
- What do kidneys remove from blood?Wastes and extra water
- Why is a balanced diet useful?It supplies varied nutrients
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.