N3C6TNp15

Answer to Problem 15:

 +  +  =  +  +  =  = 1

TEACHER NOTES:

In NCTM’s Principles and Standards for School Math, students are asked to develop a deeper understanding of rational numbers (numbers that can be expressed as the ratio of two integers) by using a variety of models such as fraction strips, number lines, 10 ´ 10 grids, fraction circles, and other concrete representations.[1]