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Perimeter – Measuring with a Ruler to Find Sides – Digital Activities + Video Lesson


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Your students will love learning how to Measure Side lengths of Rectangles with Movable Digital Rulers to Find Perimeter. This resource includes a Video Lesson and Easy-to-Use Google Slides activities that are Perfect for Distance Learning. This resource is designed for 3rd grade students and aligns to these standards: TEKS 3.7B.

This is Lesson 4 in the 3rd Grade Perimeter Series.

Here are links to the other lessons:

You may also be interested in these lessons on Area:

2nd/3rd Grade Area Lesson 1: Understand the Concept of Area by filling Rectangles with Square Units

3rd Grade Area Lesson 2: Find Area by Multiplying the Number of Rows by the number of Unit Squares in Each Row

⭐ Student Devices must have access to You-Tube to view the Video Lesson ?

The Video Lesson in this resource:

  • Teaches students how to use a movable digital ruler to measure the sides of a rectangle to the nearest cm and inch
  • Reviews how to find the perimeter of rectangles
  • Walks students through the Google Slides activities they will complete
  • Is approximately 7 minutes

⭐ Many of the slides are self-checking, so students can work through the activity with confidence.

Topics and Activities Include:

  • Using Movable Digital Rulers
  • Measuring to the nearest inch/cm
  • Finding Perimeter
  • Comparing Perimeters
  • Fun Slides with Movable pieces
  • Application of Learning in Real-World Word Problems
  • Word Problems have optional Step-by-Step support

What’s Included?

  • Video Lesson with Activity Instructions
  • 11 Interactive Activities
  • Teacher Key in separate Google Slides™ doc that can be assigned to students to check their work at home with their parents
  • PDF with a link to make a copy of the Google Slides™ in your Google Drive
  • Directions on how to assign the Google Slides™ activity to students in Google Classroom™

Standards Alignment

TEKS 3.7B Determine the perimeter of a polygon or a missing length when given perimeter and remaining side lengths in problems.

Additional information

Resource Type

Digital Resources

Grade Level


Number of Pages

11 practice slides + Video + Answer key