Have students mold the mix into shapes they have seen in real rocks. They may make them into round smooth shapes or course, rough ones. Have each student make at least FIVE rocks. Have the students write predictions about what will change and occur. Each student receives a small cup that they label with their name to hold their rocks.
Students write about the predictions they made yesterday .
Show the students how to turn their verbal sentences into writing. Describe the mixture now. Use complete sentences and include details. On the third day conduct tests and trials to see how much hardening has occurred. Each student may only have one rock from their cup.