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Activity Overview

Students use volume formulas and proportional reasoning to calculate the amount of concrete needed to make stepping stones of a specific size.

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Before the Activity

See the attached PDF file for detailed instructions for this activity
Print pages 38 - 44 from the attached PDF file for your class
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During the Activity

Distribute the pages to the class.

Follow the activity procedures:

One serving of lemonade uses 11 parts water, 1 part lemon juice, and 2 parts sugar
Calculate and record in a table how many tablespoons of each ingredient is used to make 1, 2, 3, and 4 servings
Use centimeter cubes to fill a decimeter cube box
Calculate the volume of the box
Identify the dimensions of each stepping stone
Calculate the volume of one stepping stone
Place the decorative object and 5-mm layer of gravel
Find the volume of gravel and concrete required for one stepping stone
Determine the total amount of gravel and concrete needed to build the whole pathway
Create a chart showing the calculations and the final information
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After the Activity

Students view each chart.

Review student results
As a class, discuss methods and formula used
Re-teach concepts as necessary