Matter is basically everything. Matter can exist in three different forms. These forms are solid, liquid, and gas. Give your kids some examples of solid matter, liquid matter, and gas matter to make sure they understand. Ask them to give you some of their own examples, and where they can be found. Now, read more facts about solids in this worksheet. After reading the simple sentences, head to the bottom of the page and help your kids circle the solids among the objects.