Students are introduced to the concepts of stress and strain with examples that illustrate the characteristics and importance of these forces in our everyday lives. They explore the factors that affect stress, why engineers need to know about it, and the ways engineers describe the strength of materials. In an associated literacy activity, while learning about the stages of group formation, group dynamics and team member roles, students discover how collective action can alleviate personal feelings of stress and tension.

This lesson is from Tools for NC Teachers. In this lesson, students consider the relationship between area and perimeter by trying to decide whether a shape can have a perimeter and area that are numerically the same.

This is Tools for NC Teachers. In this lesson, students develop a deeper understanding of perimeter by solving and discussing perimeter problems involving rectangles with missing sides.

This lesson is from Tools for NC Teachers. In this lesson, students develop a deeper understanding of perimeter by solving and discussing perimeter problems involving rectangles with missing sides. This is remixable.

This task is from Tools for NC Teachers. Students explore the dimensions of a carpet that is needed to cover a floor. This is remixable.

This lesson is from Tools for NC Teachers. In this lesson, students will design a dog pen using grid paper and square tiles to develop concepts about fixed perimeter and varying areas. This is remixable.

This lesson is from Tools for NC Teachers. Students complete a series of activities related to area and perimeter. It can be used at the start of Clusters 2 or 4. This is remixable.

This lesson is from Tools for NC Teachers. In this lesson, students create arrays using square tiles and grid paper in order to determine the factors of numbers 1-25. The lesson will introduce students to the vocabulary of factor, multiple, prime, and composite.

This lesson is from Tools for NC Teachers. In this lesson, students explore the possible dimensions and areas of rectangles given a fixed perimeter. This is remixable.

This task is from Tools for NC Teachers. Students explore the area and perimeter of rectangles using grid (graph) paper. This is remixable.

This task is from Tools for NC Teachers. Students explore and solve word problems related to area and perimeter. This is remixable.

These Tasks are from Tools4NCTeachers. These Tasks align to 4.MD.3. These are remixable.

This activity is from Tools4NCTeachers. Students make area creatures out of composite shapes. This is remixable.

This lesson is from Tools4NCTeachers. In this lesson, students will design a dog pen using grid paper and square tiles to develop concepts about fixed perimeter and varying areas. This is remixable.

This lesson is from Tools4NCTeachers. In this lesson, students find the area of different sized dog pens when given a fixed area. Students determine which pen would give Eddie the maximum amount of space and justify their choices. This is remixable.

This lesson is Tools4NCTeachers. In this lesson, students find the area of rectilinear figures with known side lengths and justify which home would be the best home for Larry. This is remixable.

In this lesson, students apply concepts of area and perimeter to solve multi-step problems involving real-world examples. This lesson will take 2-3 days.

This lesson is from Tools4NCTeachers. In this lesson, students will be creating monsters using a fixed area and fixed perimeter. This is remixable.

This lesson is from Tools4NCTeachers. In this lesson, students will design a play area by dividing it into four sections. Students will decompose the total play area into parts by decomposing the length and width measures. Students will connect their drawing to the partial products strategy and area model for multiplication. This is remixable.

This task is from Tools4NCTeachers. Students consider different ways to apply their understanding of equivalent fractions to tile a patio. This is remixable.