Podendorf, Illa. Shapes: sides, curves, and corners / [electronic resource] / by Illa Podendorf ; illustrations by Frank Rakoncay.. — Chicago : : Childrens Press,, c1970.. — 47 p. : : col. ill. ; 22 cm. — (Stepping into science).
Анотація: Defines the basic geometric shapes and illustrates where they can be found in toys, in the home, on the playground, and in living things.