The Next Generation Science Standard 5-PS1-1 states that students must develop a model to describe that matter is made of particles too small to be seen. In this activity, students will connect what they have learned about solids, liquids, and gas by beginning with a drawing an object and identifying the state of matter. Then students are asked to develop a particle model that will show what the particles look like if they put their object under a microscope. A solid would be packed together, liquids looser, and gas would have particles spread far apart. I have used Cheerios in the past to glue down as a particle model but students can just as easily draw their model as well in the space provided.