Lesson: Identifying Shapes and Matching PartsIntroducing the Concept

Talk about patterns that children see in the classroom and on their clothing. Remind children that a pattern has items that repeat according to rules. Try to have children identify any shapes in the patterns.

Materials: large circles, triangles, rectangles, and squares cut from construction paper (Learning Tools 20 and 21 in the Learning Tools Folder)

Prerequisite Skills and Concepts: Children should have an understanding of patterns. Place shapes on the floor in the following pattern:

• Ask: How could I describe this pattern?
Children may say that it is an AAB, AAB pattern or they may describe it by shape. Point to the circle.
• Ask: What shape is this? How do you know?
Children may say that it is a circle because it has curved lines or does not have straight sides or corners. Then point to the square.
• Ask: How many straight sides of the same length does this shape have? How many corners? What is the name of this shape?