Description
Mystery Perimeters includes an engaging mini-lesson and several practice activities for teaching kids to find the lengths of unlabeled sides of an irregular polygon in order to calculate its total perimeter. Two versions of the lesson and activity pages are included. One uses customary measurement, and all dimensions are given in inches. The other uses metric measurement, and all dimensions are in given centimeters. Mystery Perimeters is aligned with 3rd grade measurement and geometry standards, and it also makes a great review for grades 4 and 5, especially for those students who need a concrete, hands-on lesson to understand how to find unknown polygon side lengths.
Need More Perimeter Resources?
Mystery Perimeters is an expanded version of a lesson inย Exploring Perimeter, a comprehensive resource for teaching perimeter concepts. Exploring Perimeters includes over 60 pages of ready-to-use printables, step-by-step lessons, and hands-on activities to use with grades 2 through 4. Because it includes a wide variety of materials for many levels, it’s a great tool for differentiating instruction.
Save 40% with a Geometry Explorations Bundle Purchase!
This item is also available as a part of myย Geometry Explorations Bundle, and you can preview all items in the bundle from the pages below. Each product is aligned with specific Common Core Standards that range from grades 2 through 5, so look for the standards when you preview each title.
- Geometry: Exploring the Basics
- Amazing Angles
- Exploring Perimeter
- Polygon Explorationsย
- Polygon Sorting for Google Classroomย
- Mystery Perimeters
Written by Laura Candler
Aligned with math content standards 3.MD.B.4, 3.MD.D.8, 4.MD.A.3
