
In this 3-act activity, students need to invent a different way to measure the powdered chocolate than what the instructions dictate. How many 1/4th teaspoonsfuls of powder = 2 teaspoons? How many 1/8th teaspoons = 2 teaspoons? General rule?
First, students need to find the surface area that the M&Ms cover in order to approximate how many M&Ms she needs to finish her cake.
When Brian tried to make the cake, he mistakenly added too much peanut butter. Now all the of ingredients will need to be increased by some percent to insure that the cake maintains appropriate ingredient ratios?