We are continuing our study of area with today's focus being on finding the measure of an unknown side. Yesterday, the students were given the length and width of rectangles and calculated the area of each, or one side for a square (just multiply the side measure by itself). Today, the students were given the area and the measure of one of the figure's sides. The task: find the measure of the unknown side. It is entirely doable since in math you need at least two numbers to work with. Instead of multiplying the length and the width, turn it into a division problem by dividing the area by the known side.
For example, a rectangle has an area of 36 cm² and one side measures 9 cm. 36 ÷ 9 = 4 so the measure of the missing side is 4 cm. To prove it, multiply 4 and 9 to get 36.
I also threw in some perimeter problems too to keep skills sharp.
In science, I did a demonstration using a radiometer. It looks like a weather vane and has four panels encased within a glass sphere and inside is a vacuum. Each panel has a black side and a white side. When a flashlight is shined on the black side of the panels, the black absorbs the most light and since it has nowhere to go, it gets built up in the form of heat causing it to spin.