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In this activity, learners explore chemistry and the microbial world by making their own sourdough starter and bread at home using only flour and water.

Eggs are placed in vinegar for one or two days to dissolve the shells. Then, learners place the eggs in water or corn syrup and observe them over a period of days.

In this chemistry activity (page 3 of the PDF), learners will learn about crystals by growing their very own.

In this activity (on page 2 of the PDF), learners make a plastic protein polymer from milk. Adding vinegar to milk causes the protein casein to solidify or curdle.

In this construction activity, students use a 2-liter bottle to build a fly trap.