# Teacher Tool of the Month: Equivalent Fractions on the Number Line

April 23rd, 2013

The interactive white board tool for this lesson can be found on our website under Resources and Teacher Tools.

In this DreamBox lesson, students set up race courses of varying lengths by placing and locating resting points, food booths and other stations at different intervals along the course. In this lesson, students represent equivalent fractions in a real-life problem situation, which enables them to use proportional reasoning and understand equivalent fractions as part of a whole.

### Common Core State Standards

 Grade ID Domain Cluster Standard 4 4.NF.1 Number and Operations – Fractions Extend understanding of fraction equivalence and ordering Explain why a fraction a/b is equivalent to a fraction (n×a)/(n×b) by using visual fraction models, with attention to how the number and size of the parts differ even though the two fractions themselves are the same size. Use this principle to recognize and generate equivalent fractions. 5 4.SMP.4 Standards for Mathematical Practice Model with mathematics.

Adapted from: Fosnot & Dolk. Young Mathematicians at Work: Constructing Fractions, Decimals, and Percents (Portsmouth, NH: Heinemann), 84-85.

### Thera Pearce

teacher | mother | learner | friend | Raleigh, NC