Instructions: Use modeling clay or Play-Doh to sculpt a cylinder. A cylinder is a three-dimensional form with straight sides and a circular cross-section.

Materials: Modeling clay

Keywords: Cylinder, cross-section, three-dimensional

Step 1: Roll the clay into a long, straight, thick roll of equal thickness, like you are making a large snake.

Step 2: Shape or slice off the ends flat with a thread or a butter knife.

Step 3: See below what your cylinder might look like.

See below a picture of 'Vessel with an Enthroned Lord and Seated Figure' from Mexico, Xcalumkin (Northern Lowlands), Maya culture (A.D. 765). Note its cylindrical shape.