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.

This is a task where it would be appropriate for students to use technology such as a graphing calculator or GeoGebra, making it a good candidate for students to engage in Standard for Mathematical Practice 5 Use appropriate tools strategically.

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.

Students will find helpful resources for learning and practicing math skills and processes in this eMediaVA collection.

This collection has resources organized by grade level teachers can use to teach math.

Determining whether a proportional relationship exists between two quantities and making connections between and among representations of a proportional relationship. Representing proportional relationships, including practical situations, determining unit rates, and determining missing values in a ratio table. Mathematics Instructional Plans (MIPs) help teachers align instruction with the 2016 Mathematics Standards of Learning (SOL) by providing examples of how the knowledge, skills and processes found in the SOL and curriculum framework can be presented to students in the classroom.

This assignment can be completed individually or in a group of 2-3.  The teacher begins with slide 2, a welder can earn $17/hr.  Then using multiplicative or additive properties to complete the table.  The first 2 career options give hourly rates.  The following two give weekly rates, while the last is a yearly salary.   Students can work up or down the ratio table depending on their comfort level.   The last three slides are for the students to explore salary options not mentioned before.  Students are increasing by 10's and doubles to find the salaries.  

In this task students use ratio and rate reasoning to solve the real-world problem of a runners rate and distance.

Parts (a) and (b) of the task ask students to find the unit rates that one can compute in this context. Part (b) does not specify whether the units should be laps or km, so answers can be expressed using either one.