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Printable 4th grade science worksheet with 15 fill-in-the-blank questions about the circulatory system, heart, and blood cells.
Worksheet

The Circulatory Story

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This printable science worksheet for 4th graders contains 15 fill-in-the-blank questions based on a story about the circulatory system. Students answer questions about red blood cells, hemoglobin, heart chambers, valves, capillaries, the aorta, and blood clotting. Designed for partner work with a text, this worksheet works well for reading comprehension, vocabulary reinforcement, or unit review.

Subject:
Science
Topic:
Anatomy
Grade Level:
4th Grade
Updated September 2026

How to Use This Worksheet

Print this worksheet for classwork, homework, or independent practice. Click 'View Worksheet' to edit questions, adjust formatting, or add your own content before downloading.

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