Perimeter means the distance around something- like the fence around a garden to keep the deer from pilfering your plants. Or, the boards around a sandbox that keep the sand from seeping. Or a picture that frames your family. Okay, enough annoying alliteration… Now, get your head around this idea: how […]
Triangular Number Know-How…
Triangular Number Know-How What is a triangular number? It is easy to see what a triangular number looks like, but isn’t there some way of figuring them out without drawing a picture? Actually, triangular numbers are created by adding consecutive numbers. For example: 1 = 1 1 + 2 = […]