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Find the Missing Side Perimeter – Use Strip Diagrams to Find the Missing Side


SKU: 9459464 Categories: ,


Game-Changing Find the Missing Side Perimeter practice? Yes, Please! Your students will love these interactive Find the Missing Side Perimeter activities. The problems integrate strip diagrams to help students visualize each problem. The numbers of side lengths on the shapes, as well as the perimeter, are all movable pieces! Students move the numbers that label the shape to build strip diagrams and equations to solve these multi-step problems.

These Google Slides focus on problems where you know the perimeter and the lengths of all other sides.

Benefits and Features of this Digital Find the Missing Side Perimeter resource:

  • Every slide is bright and colorful to capture your students’ attention.
  • Interactive movable pieces keep students engaged.
  • Video Instructions embedded into the Google Slides make your job easier.

Video instructions for students are embedded in the activity:

  1. Have students who forget instructions as soon as it is time for them to begin working? Students can watch the video instructions before completing the activity at a math station, for seatwork or homework.
  2. Have students who are absent? The video instructions save you time so that you don’t have to explain how to complete the activity to students.
  3. Have a sub? They can watch the video instructions so that they can offer support while students complete the digital activity.

Perimeter Find the Missing Side Topics Include:

  • Use Addition and Subtraction to find the missing side when you are given the perimeter and know the lengths of the other sides
  • Represent Perimeter problems using Strip Diagrams
  • Perimeter Find the Missing Side Word Problems

What’s Included in this resource?

  • PDF with a Link to make a copy of the Google Slides in your Google Drive
  • Video Instructions (Student devices must be able to access YouTube)
  • 10 engaging student practice slides
  • Teacher Key

Ideas on how to use this resource:

  • Use it as a whole class teaching tool by projecting the slides and using the movable, interactive pieces to teach your lesson
  • Use this resource as a no prep math station
  • Use it as an early finisher activity
  • Use this resource for small group reteach or tutoring
  • Assign this resource as a lesson for student practice as independent work. the embedded video instructions keep students from interrupting you.
  • Share the digital key for parents and students to check work at home

This resource can be easily assigned in Google Classroom or any other platform compatible with Google Slides. Homeschool parents can use this resource by simply opening it in Google Slides. All you need to access Google Slides is a free Gmail account.

Additional information



Common Core


Resource Type

Digital Resources

Grade Level


Number of Pages

10 student slides + video instructions