5th graders just finished studying plants, so we took that lesson a step further by studying the capillary action that makes paper (made from plant materials) absorbent. Students experimented with watercolors, various amounts of water, resists (tape and crayon) and salt. We talked about the structures of the plants, the creation of paper, and we discovered that recycled paper allows diffusion easier than non-recycled paper, because the fibers have been broken up more.


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