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In this activity (page 6 of the PDF), learners will observe both a chemical and a physical change. By experimenting with plaster of paris, students will differentiate between these types of changes...

In this activity, pairs of learners will create two make-believe dig sites by burying chicken bones in plaster of Paris--a powder that hardens when wet. Then, learners try to excavate (dig out)...

In this activity, learners explore how composites work by creating and testing their own composite for an imaginary company. This activity shows learners that composites are simply materials that...

In this biology experiment, learners plant soybean seeds in plaster of Paris, witnessing firsthand the mighty power and ability of plants to grow in adverse conditions. This is also an excellent...

In this chemistry activity, learners witness an exothermic reaction, while making their very own, completely usable sidewalk chalk. This is also an excellent activity for exploring color mixing. In...

In this activity, learners will model the mechanical weathering and erosion of rocks in a stream or river. Learners put "stones" made of plaster of paris into a plastic container filled...

In this activity (on pages 25-31 of PDF), learners soak sponges with different amounts of plaster of paris to simulate different levels of calcification in bone formation. After being allowed to...

In this activity, learners combine two substances (plaster of Paris and water) to make a cast of an object's imprint in clay. Use this activity to introduce learners to how scientists and...