This lesson focuses on the observation of properties and the classification of objects to build ideas about variables. Learners compare buttons to identify similarities and differences. In addition, learners are introduced to Venn Diagrams by reading "The Elves and the Shoemaker" and sorting their shoes in a giant diagram.

- Subject:
- Mathematics
- Material Type:
- Interactive
- Lesson Plan
- Provider:
- National Council of Teachers of Mathematics
- Provider Set:
- Illuminations
- Author:
- Carol Midgett
- Grace M. Burton
- NCTM Illuminations
- Thinkfinity/Verizon Foundation
- Date Added:
- 11/09/2008