Ask students to draw a ball. Then, help the kindergartners create a 3-D ball using newspaper. Give each student a full sheet of paper and ask him to make a ball. Point out that no matter which side of a ball that you look at, it looks like a circle. If you moisten the paper slightly, it will keep its shape much better. Have students go outside or into a gymnasium to see how far they can throw the new balls. Be sure they do not aim the balls at each other.
Use aluminum foil to make a square box. Give students a small, square box to use as a mold. Take a piece of aluminum foil and mold it around the box to form a new box shape. Remove the box and retain the mold. Point out to students that this box is square, no matter which side you look at. Also note that not all boxes are square.
Use a cylinder container, such as an oatmeal container, to show a different shape box. Cover the container with card stock and allow the children to paint and decorate the containers so they can be a decorative and useful object. Use the oatmeal container as a miniature hat box where students can keep treasures. Explain that this container is called a cylinder.
Use old greeting cards to create a pyramid shape. Cut three triangles, all the same size, and glue the edges together to make a pyramid. Use sparkle on the edges of the cards for a decorative element. Use pyramids as a tabletop decoration or turn them around and use as a basket by simply adding a handle. Kindergartners see that a pyramid is comprised of three triangle shapes. Show students pictures of ancient Egyptian pyramids so they can compare the shapes with the pyramids they made.