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8th Grade - Cost per Unit


Calculates rates involving cost per unit to determine the best buy. SPI 0806.1.3

Links verified on 7/23/2014

  1. American Grocery Shoppers - Consider the problem of determining a "better buy" when you are shopping for canned tomatoes. (an interesting perspective on unit cost)
  2. An Adobe Acrobat document in .pdf formatApplying the Unit Rate Approach - [worksheet] students record the rate appropriate for the question asked, find the corresponding unit rate, write a short sentence interpreting the unit rate, and use the rate to find a solution to the problem This link includes something for the teacher to print
  3. The Cost Per Unit of Baking Items - calculate the cost of recipes
  4. Math at the Mall - practice percentages and finding the best deal while shopping at a virtual mall This site is interactive and allows students to play a game or input or collect data
  5. Proportional Relationships and Unit Rates - lesson plan with links to several worksheets A lesson plan can be found at this site
  6. Quiz on Smart Shopping - a three question quiz to test understanding of cost per unit This site includes questions for your students to check their understanding
  7. What's for Lunch? Pizza Cost Comparison - Visit the Internet Pizza Server and compare costs for different combinations of toppings and pizza sizes. You will also have the opportunity to create and "order" a pizza of your choice. This site is interactive and allows students to play a game or input or collect data

Internet4classrooms is a collaborative effort by Susan Brooks and Bill Byles.




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