Lub-dub, lub-dub. Why does the heart beat? Why does blood circulate throughout the body? Life scientists find out how important circulation is for dissolving and dispersing materials by timing how long it takes for food coloring spread through a dish of water unaided. 

Concepts

the circulatory system, human body systems, the heart

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Additional Tags

circulatory system, heart, science

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Classroom Considerations

• Though this lesson easily stands alone and can be used in your human body systems curriculum, make sure to consider the rest of the unit by this publisher

Pros

• Outstanding example of what happens without the aid of circulation
• Part of a larger unit on the heart and circulatory system
• Lab sheet keeps groups on task

Cons

• None