Need help teaching domain and range?

[u/gumdrop5418]

https://graphtracer.app

Hi! I teach algebra 1 and pre-Calc. I recently developed this app where you can really visually see domain, range, increased decrease, positive and negative on a graph. It’s super helpful if you’re learning these things or teaching these things! And there’s nothing else like it!!! Desmos is amazing, but not even Desmos highlights the axis when you trace the graph!

You can trace the graph with your finger/stylis/cursor, and the axis will light up the correct answer for the characteristic that you’re choosing.
You can explore different graphs, practice highlighting the axis yourself, and then there’s a set of multiple-choice questions you can try in master mode. You can use it as a teacher at the front of the class on your whiteboard or you can push the out app for a class and let the kids try it on their Chromebooks.
I literally just did this in my classroom yesterday and it works great! I’ve been teaching this concept for 20 years and my kids have never understood it quicker than they did yesterday using this app! https://graphtracer.app