One of the topics for 6th grade life science is Plants. As students study how plants grow, they come to understand that plants exhibit a number of behaviors that are called tropisms. Tropisms are specific responses to environmental influences. One of these is the response to light stimuli that causes a plant to "follow" or "seek" the light. We are in the midst of an experiment that has students observing the growth and reactions of pinto bean plants to an environment that provides very limited light from a very controlled direction. To do this, students have constructed "light" boxes from shoeboxes. The boxes have relatively small holes cut into the top or side, and then a further light diverting baffle placed on the inside. As the bean plants grow, it is possible to see the effect of the tropism for light sensitivity.
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