## Lesson: Identify Plane Shapes and Solid Shapes

Introducing the Concept

Your children were formally introduced to plane shapes in Kindergarten. Now they will sort and classify plane shapes by the number of sides, number of corners, and size.

**Materials:** red, yellow, and blue construction paper circles; a set of four basic plane shapes (circle, square, rectangle, triangle) for each child (use small attribute blocks or the smaller shapes from Learning Tool 27 in the *Learning Tools Folder),* a larger version of the four basic plane shapes for every child or pair of children (use large attribute blocks or the larger shapes from Learning Tool 27); chart paper

**Preparation:** To review position words, cut out construction paper circles so that each child will have one and so that the colors will be as evenly divided as possible. If using Learning Tool 27, copy and cut out shapes. You may want to put each set of shapes in an envelope so you can easily give them to the children.

**Prerequisite Skills and Concepts:** none

Begin by reviewing position words with the class. Have children work in groups of three. For each group, give one child a yellow circle, one a red circle, and one a blue circle. Then, using position words such as *between, below, left,* and *right,* give instructions on how to arrange the circles in relation to one another. Tell children that they will next work with their circles and other shapes.

When the children are done, have volunteers share one way in which they sorted their shapes. While one partner explains the attribute by which they sorted, have the other tape the shapes in their appropriate groups onto one of the pieces of chart paper. At the top of each paper, label how the shapes are sorted. Possible attributes by which to sort are size, shape, number of sides, and number of corners. You may wish to display the completed charts.