Rectangular prism sounds like a complicated shape, but it's really just a 3-D rectangle. Teach your first grader about this common shape with this worksheet that asks him to circle the everyday things shaped like rectangular prisms. For an extra challenge at the end, he'll also think up a few of his own examples and draw them in the box at the bottom.

Help your first grader learn about cones and cylinders in the other Seeing Shapes worksheets.