Lesson objective: Apply understanding of writing a nonunit fraction as the product of a whole number and a unit fraction in order to solve a problem involving running on tracks.
This lesson provides an opportunity for students to apply their knowledge and understanding of multiplying unit fractions by whole numbers to a contextual situation. Students are asked to determine the lengths of four different running tracks given the distance someone has traveled in a certain number of laps on each track. Once students know the length of the track, they will use that to determine how many laps are needed in order to run \(\frac34\)mile.
Key Concept students will use:

A nonunit fraction, \(\frac{a}b\), is a multiple of the unit fraction \(\frac1b\).
Skills students will use:
 identifying the unit fraction that is a multiple of a nonunit fraction
 identifying the number of unit fractions in a nonunit fraction
 finding equivalent fractions (Grade 4, Unit 5)
Students engage in Mathematical Practice 1 (make sense of problems and persevere in solving them) as they work to solve a multistep word problem. Students identify a unit fraction, find an equivalent fraction, and determine how many times to multiply the unit fraction in order to generate the equivalent fraction.
Key vocabulary:
 denominator
 equivalent fraction
 nonunit fraction
 numerator
 unit fraction
 whole number