Students determine how many times they would need to fill a quarter cup to measure the ingredients in a recipe.
This lesson informally introduces the idea of dividing by a fraction. Students must figure out how many times a quarter cup must be filled to measure the ingredients in a recipe. This involves dividing each amount by . Here are some methods students might use:
- Add repeatedly until the sum is the desired amount. Count the number of s that were added.
- Start with the amount in the recipe. Subtract repeatedly until the difference is 0. Count the s that were subtracted.
- Draw a model (e.g., a bar or a number line model) to represent the amount in the recipe. Divide it into fourths and count the number of fourths.
Goals and Learning Objectives
- Learn how to divide by a fraction.