Here is a colorful and artistic way to review certain concepts from class that can be categorized. This sheet can be fully or partially customized by the teacher. You create the categories. You and or the kids can select the colors for each category and content for the grid.

Some examples are:

Math: Classifying Numbers

Grid boxes are filled with different types of numbers and are colored based on the smallest subset that number belongs to.

LA: Parts of Speech

Grid boxes are filled with words and are colored based on what part of speech they are

Bible: Books of the Bible

Grid boxes are filled with books of the Bible and colored based on what section they are located (OT/NT or History, Minor prophet, major prophet, poetry...)

Science: Elements

Grid boxes are filled with the symbols of the elements and colored based on how they are classified (Noble gas, Alkalai metals, Metalloids, Halogens...)

Use your imagination, there are tons of possibilities!