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In this fun, hands-on autumn activity, learners experiment to discover whether the colored substances in leaves can be separated from the leaves.

In this activity, learners conduct an experiment to explore how water flows up from a tree's roots to its leafy crown.

In this hands-on activity, learners investigate the functional design of leaves on a tree.

In this activity on page 5 of the PDF (Plants—The Green Machines), learners use chromatography to separate and identify pigments within various leaves.

This is an activity (located on page 3 of PDF under Nasturtium Leaves Activity) about surface tension.