Covering & Surrounding

Investigation 1: Extending and Building on Area and Perimeter

This investigation revisits and extends understanding of concepts from earlier grades, area and perimeter. Students will develop efficient strategies, including formulas, for finding area and perimeter of rectangles.

Investigation 2: Measuring triangles

In this investigation, students deepen their understanding of area and perimeter of triangles and of what it means to measure area and perimeter. The primary goal is for students to develop, understand, and use the formula for finding the area of a triangle.

Investigation 3: Measuring Parallelograms

In this investigation, students deepen their understanding of area and perimeter of parallelograms. The primary goal is for students to develop, understand, and use procedures for finding area and perimeters of parallelograms. Students decompose parallelograms into two congruent triangles to find that the area of a parallelogram is twice the area of a triangle with the same base and height.

Investigation 4: Measuring Surface Area and Volume

The main goal of this investigation is to introduce students to surface area of three-dimensional figures made from triangles and rectangles. This builds on students' ability to find the areas of these polygons. The final problem extends surface area to prisms and pyramids made from rectangles and triangles.

Link to our slide show Covering and Surrounding

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