The Math Matrix is a participant in the Amazon Services LLC Associates Program. If you click on an ad or affiliate link, I may receive a small commission at no additional cost to you. You are not obligated to make your purchase using these links but when you do, it supports my blog and small business. I am grateful and thankful if and when you choose to use my links. I am intentional with the services and products I link, only sharing those that I personally use and love.