The opening slide describes that the best deal is getting more for your money.  Things on sale are not always at the best price and the amount of product matters.  Students are given five slides with two or three prices.  Students have to determine which is a better deal.  Students may use unit rates, but students are also asked to use another way to determine which is a better deal.  Students can scale up or down using ratio tables or by purchasing the same quantity of each item. 

In this activity, students find the unit rates of various objects from two different stores and then compare the unit rates to determine which store has the better deal.

In this activity, students find the unit rates of various objects from two different stores and then compare the unit rates to determine which store has the better deal.

Students lean about proportions, ratios, and unit rate. It is important for connections to be made among ratio tables, graphing points, and slope of a line. Students make these connections through the first activity provided by the VDOE. The second task by Illustrative Mathematics is a way to assess student understanding.

This activity asks students to use proportions to find a missing unit cost or unit weight for various amounts of fruit. This should be used as practice after students have a solid understanding of how to use a proportion to find a missing value.

This task focuses on using rate language and developing the context of unit rates.  It also focuses on having students look at multiple strategies for solving ratios and encourages a teacher facilitated discussion of these different strategies.

The principal purpose of the task is to explore a real-world application problem with algebra, working with units and maintaining reasonable levels of accuracy throughout.