Demonstrate in living color the amazing way that plants drink.
Plants need water. They "drink" the water through the tubes (like straws) in their stems. This dye activity gives a visual of how this process takes place.
This also opens up an opportunity to introduce the scientific method and start a "science journal," in which children can record their observations. Toddlers can color in diagrams and even glue on printed labels with help.
Older kids might be interested to know that these tubes are vascular bundles that contain xylem and phloem. These vascular bundles function like our own circulatory system of veins, bringing water and some nutrients from the roots to the leaves (xylem) and food from the leaves to the rest of the plant (phloem).
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