Hand a child a block and a paper square, and they will happily tell you which one they can stack, even if they have never heard the word « dimension. » This kindergarten 2D and 3D shapes worksheet puts names on that difference. It shows three shapes: a blue cube, a purple diamond and a yellow block with a slanted side. Beside each one sit two tags, two-dimensional and three-dimensional, and the child colors the right one. The cube and the block are drawn with shading and hidden edges, which is how a flat page shows something solid. The PDF holds two pages, the worksheet and its answer key.