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

Links verified on 11/12/2016

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) [This expired link is available through the Wayback Machine Internet Archive. If the page doesn't load quickly click on Impatient? at the bottom right of the page.]
2. Applying 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 expired link is available through the Wayback Machine Internet Archive. If the page doesn't load quickly click on Impatient? at the bottom right of the page.]
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
5. Proportional Relationships and Unit Rates - lesson plan with links to several worksheets
6. Quiz on Smart Shopping - a three question quiz to test understanding of cost per unit
7. Significant Figures Calculator - one of many calculators available from Omni Calculator
   1. Related Calculators from Omni Calculator
   2. Price (Quantity) - compares cost per quantity of two different products
   3. Pizza Comparison - helps decide between one large or two smaller pizzas
   4. Tap Water - shows how much we save when we drink tap instead of bottled water
8. 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.

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