The document provides instructions for making Glaak, a substance created by combining laundry starch, white glue, and salt. Students will record observations of the ingredients before and after mixing them to form Glaak. They will then answer questions about how the properties of the ingredients change upon combining to form the new material, Glaak, which has different properties than the original materials alone. The purpose is to investigate how combining materials leads to a new substance with different properties.