In this new scope, students will learn how to use addition to find the perimeter of polygons; how to exhibit rectangles with the same area but different perimeters; how to determine an unknown side length of a polygon if the total perimeter and other side lengths are known; and how to recognize when a problem’s solution involves finding perimeter.

Students will use their writing planners to write essays explaining how Galileo helped people understand space using evidence from “Galileo’s Starry Night” and Starry Messenger. Students will use the craft elements they have studied, such as developing a topic with facts, definitions, and details and providing a conclusion paragraph. Students will peer-review their classmates’ work and revise and edit their own work.