To begin our lesson today, I had Oliver work with some pieces of construction paper to make symmetrical shapes. In addition, I used squares of paper to prove to Oliver that the area of any triangle with a base and a height that matches the base and height of a rectangle is exactly 1/2 the area of the rectangle. Next, we moved on to work through Chapter 14-6 on perimeters of many shapes with straight edges. Oliver displayed a good understanding of perimeter and his ability to find the perimeter of the common shapes in the text. I also had Oliver work on some unique shapes to find their perimeter.