Why do stems grow up and roots grow down? A video from the Fuse School Plants playlist explains the four types of tropisms that control plant growth. Simple graphics demonstrate the importance of each type of tropism for various parts of the plant.

Concepts

hormones, plants, phototropism

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Additional Tags

science

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Instructional Ideas

• Break down each vocabulary word into the roots to help with comprehension
• Relate the four types of tropisms in pairs: positive/negative and photo/geo

Classroom Considerations

• Relies on prior knowledge of hormones, specifically growth hormones

• This video is hosted on YouTube

Pros

• Includes a transcript to make note taking easier
• Offers links to other videos to learn more

Cons

• None

Common Core

RST.9-10.4 RST.11-12.4