In this Mystery, students will learn the importance to sunlight to plants, which is collected by their leaves. Knowing how plants respond to sunlight, they will build creative Grass Heads. This mystery requires two class periods.
After 2 weeks, what do you think will have happened to the plant in the dark compared to the plant in the light?
Turn to someone next to you. Tell them your prediction and your reason why.
Discuss: Why might the plant in the dark have grown taller? Look closely at the plants to see if there are any clues.
Why do you think the leaves are moving?
How can a tree get more sunlight when a lot of other trees are starting to get in its way?
So now if someone asked you, "Why do trees grow so tall?", how would you explain it to them?
You've completed the Exploration & Activity!
You can duplicate this experiment in your classroom. Just follow these detailed instructions on the website of the Chicago Botanic Garden.
In less than three minutes, this amazing video shows your students how a forest changes over the course of a year. This can be used as an interactive classroom exercise in observation. Ask students to raise their hands when they know what season it is in the forest. Stop the video when enough hands are up, then ask students to explain what clues tell them the season.