"Little children, in fact, touch everything they see, thus obtaining a double image (visual and muscular) of the countless different objects which they encounter in their environment." - Dr. Montessori (Discovery of the Child, 1988 pg. 119)
To increase comprehension, the children colored a small paper with the objects to take home.
The children were then able to match objects in the environment to pictures of the solids.
If you see objects in the environment with the shape of a cylinder, cone or cube, point it out to your child. They will enjoy transferring their knowledge learned in school to their own world.