Students investigate what matter is and how it changes states.  In this physical properties instructional activity, students examine the vocabulary database and identify the characteristics of the three phases of matter....

Learners develop an understanding of the concept of matter. They l participate actively in the bubble raft experiment as described on the Center for Thermal Spray Research's website. They demonstrate dislocations and grain...

Fourth graders make models of igneous, metamorphic, and sedimentary rocks out of different types of candy and cookies.