Education Technology

Smart Shoppers

Activity Overview

In this activity, students will compare ratios with different denominators, and then with common denominators. They will also find unit rates.

Key Steps

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    Students will find discounts and sale prices for items selling at 20% off and 40% off by using tables. They will then find the general rules, using a variable, for finding those discounts and prices.

    First, students will create a table showing the discount and sale price for the 20% off sale the sporting goods store is having. The calculations will initially be done on the Home screen.

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    Then, students will enter equations for the discount and the sale price in the Y= editor to set up a table.

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    Finally, students will explore the 20% off table before exploring a 40% off sale.