7th Graders Design a Protective Pill Coating

As part of their unit on human body systems, 7th graders at Timberline PK-8 designed a protective coating for a pill that must pass through the stomach without dissolving. Students used the design process and their new knowledge of the digestive system and stomach acids to create a recipe for their protective coating and tested their recipe by attempting to dissolve their coating in an acidic solution. The science-based project integrated math skills such as fractions, writing equations, and graphing. Once student groups were able to find a formula that did not dissolve in the solution, they were challenged to make the coating thinner so the pill would be less difficult to swallow.