This is an activity designed for students to understand and visualize the difference between area, surface area and lateral area using concrete shapes.
I started off by making 2D shapes of squares and triangles to work as the lateral faces of the 3D image. I made sure they were the same thickness, height and shapes that needed to be equal were equal. I then put rectangle spacers to connect the shapes and keep the integrity of the whole print together.
Overview and Background
This is an activity designed for students to understand and visualize the difference between area, surface area and lateral area using concrete shapes. The students will first review the idea of regular area of a 2D shape in the Do Now. After that, they will look at the nets as a group and determine what 3D shape is formed. After that, they will find the lateral area and surface area of each object.
Lesson Plan and Activity
See attached pdf file of lesson.
Make sure that you have your objects printed before the start of the lesson.
- Ability to visualize
- Surface Area
- Cooperative Learning
The way this lesson currently is (still a work in progress) would be about 20-25 minutes. This will not be a full lesson period as it currently is. More shapes will need to be made and printed.
Set your desks into groups before students arrive.
Rubric and Assessment
Students will be informally assessed by monitoring their classwork throughout the duration of the lesson.