Describes the properties of polygons in mathematics and the types of polygons seen in everyday life.

Describes the properties of triangles in mathematics and everyday objects shaped like triangles.

Introduces the properties of a circle in mathematics and displays everyday items that are circles.

For any professional designer or developer working in the world of web technologies or multimedia, Flash is the must-have application, and knowing how to use it effectively is vital. Add in ActionScript 3.0, and Flash becomes an even more powerful tool for the development of high-performance web applications. The Essential

For decades early childhood educators in high-quality programs have understood that the transition into reading and writing occurs naturally when young children are surrounded by opportunities to interact with print in ways that are meaningful to them. The original edition of More Than Letters, first published in 2001, showed teachers