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This activity (on pages 13-18) has learners build a model tree and then figure out how to make their tree stand up by itself.

Learners complete a series of hands-on and investigative activities to explore cumulus clouds.

This activity provides an opportunity for learners to observe and examine how carbon dioxide, water, and light produce glucose/starch through a process called photosynthesis.

In this activity, learners construct models of plants that are adapted to living under specific environmental conditions.