WHAT YOU NEED: an orange, pencil and paper. The orange should be as round as possible, so the peel represents the surface area of a sphere. STEP 2: Repeat this 3 more times. You should now have 4 ...

This is likely why some people in the past believed the earth to be flat. But most people now know that is far from the truth. You live on the surface of a giant sphere, like a beach ball the size of ...

If the container is a square or rectangle, use the ruler or tape measure to find the length ... Provides seven investigations that explore the surface area and volume of objects such as ...