I’ve been using this website for a few years now to help supplement my math classes.  Their website includes lessons Screen Shot 2015-12-08 at 4.20.23 PMthat are common core aligned and helpful for extending or reinforcing the math concepts you are teaching in class.  All the lessons are designed by members of NCTM and so are teacher tested and created.  The site also includes online interactives that help engage students in a math concept even further.  

Simple Uses?

I use this to supplement what I already do in Math.  I’ve used it as an extension for early finishers, an option for differentiation for students who need an extension or those who need reinforcement.  Or as a way of re-teaching a lesson from a different angle.

Do I Plan To Use It?

Already do!

Commitment And Learning Curve

LOW!

Best For

ES/MS/HS

Cost

Free!

Website

https://illuminations.nctm.org/