Learning about Percentages: Today's STEM Play of the Day

Jun 01, 2020

Understanding percentages is a very important part of math. Today’s STEM Play of the Day from the Ripken Playbook will help us learn about percentages using household items! 


  • Items that come in different colors/shapes/sizes in the same container – think candy, fruit snacks, beads, etc.
  • Piece of paper
  • Pencil/pen

Let’s Learn about Percentages

For this example, we will use a jar of candies. Percentages represent part of a whole. For instance, in a group of 10 people, if seven of them wore glasses, they make up 70% of the group. To calculate percent, take the number of items in a group and divide it by the total number of items and multiply it by 100.

  • Open your candy jar and count the total number of candies in the jar. How many were there.
  • Now, sort your candies into groups – for instance, group the the red candies, the blue candies, etc.
  • How many groups did you form?
  • List each group and the number of candies in each group.

Now, calculate the percent of your candies

  • Calculate the percent of each group of candies found in your candy jar. 
  • What group had the largest percentage of items?
  • What other items in your house can you use to calculate percentages?

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