Teach your students to find the perimeter of polygons using real world examples. They will make polygon pictures using tangrams and practice finding the perimeters of the polygons in their masterpieces.
Students will be able to find the perimeter of various polygons by adding the sides or measuring with a ruler.
The adjustment to the whole group lesson is a modification to differentiate for children who are English learners.
Read to your students Spaghetti and Meatballs for All! A Mathematical Story by Marilyn Burns (a story about perimeter), The Warlord's Puzzle by Virginia Walton Pilegard (a story about Tangrams), or another picture book to get them thinking about the learning they are about to dive into.
Preteach any unfamiliar words to students prior to reading aloud the picture book.
Provide student-friendly definitions with images of the main concept vocabulary perimeter or tangrams, based on whichever book is read aloud to the class.