A prism is a 3D shape which has a constant cross section - both ends of the solid are the same shape and anywhere you cut parallel to these ends will give you the same shape. For example ...

Learning got hands-on and a little sticky in Mrs. Freilinger’s 1st grade class at Higgins Elementary as students explored 3D ...

Faces - A face is a flat surface on a 3D shape. For example a cube has 6 faces ... Whereas cuboids, they're like a stretched cube and have 2 square faces and 4 rectangular faces.