"Why should I learn Math? Who needs Math?" Some answers. 

Math First Peoples: Teacher Resource Guide

Indigenous Math Resources by UBC

Plot Dynamic Vector Fields here and much more with these curious applets. 

Ask Wolfram|Alpha to compute something. 

Graph with Desmos Caclulator.

Plot anything in Geogebra. 

Touch Geometry Project: digital + physical experience together: Explore geometry through the fascinating collection of geometric models.

Ted-Ed lessons in Mathematics: Ted-Ed