PhotoMath is an app that allows you to see how to work out equations
I use this app very sparingly because often students are tempted to use it before they've worked the problem out so monitoring is very important. It can be a very useful tool, especially for lower learners and special needs students who need to see problems worked out over and over again.
How I Use It
I use PhotoMath when we are reviewing a topic. It allows students to scan or take a picture of a problem from a text book. It doesn't read hand written problems. I like it because it shows step by step how to solve problems so the students can find where they made a mistake.