You may also draw a picture of yourself using a tool to do science. Choose something to measure that everybody has. You may use a thumb, a foot, or your whole body. Measure how long it is. Make a class graph of the measurements.
Scientists make other groups for things that are different.
Find a place where there are lots of neat things to observe. The place could be a nature spot outside, a museum, or a collection of nature items in your classroom. Each person, choose one item. Draw a picture of it. As a class, decide how to group the items.