This is a fun science experiment that I do every holiday season to teach my students about mixtures using a lab technique called chromatography. The results are beautiful! Create candles or a string of holiday lights using the following simple materials: washable markers (Mr. Sketch brand works best!), coffee filters (or cheap paper towels, filter paper, or actual chromatography paper. In the photos above, I used coffee filters), cups, water, tape, pencils.
Packet includes: explanation of mixtures, 3 worksheets for students in grades 2,3,4; scientific method lab worksheet and answer key, prediction and actual data chart, student bar graph, 1 prediction worksheet for students in grades K and 1, detailed instructions and photos of the lab, lights pattern.
Any student in grades K - 4 can do this experiment but they of course will understand the science behind the experiment at different levels. The worksheets I've included (scientific method, prediction and actual data chart, student bar graph) are for students in grades 2-4. For my younger students, I use a prediction worksheet where they have to color in the colors they think they will see. I've included that worksheet in this packet.
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Please note: these units are for the use of one educator.
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Sue from Science for Kids :)