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A real world example of the perpendicular bisector. ""The model says that if you have two gangs that are equal in their competitive abilities, the boundary between them will be equidistant and perpendicular between their anchor points," Brantingham says. "It's a nice, simple, geometric organization.""

"We are math teachers who share what we've learned, cause we don't want our classes to suck the energy from students. Professional development among friends, not just colleagues. Fun! Immediately useful! Interesting!" The Conference Tab on this page contains video archives of previous meetings. Some of the previous meetings include tips and tricks for using Mathalicious and Desmos in your classroom.

"A study conducted by two Michigan psychologists, for example, reports that middle-school math students asked to anticipate how linear and exponential factors work-before this information was taught-became more curious about the content of the lessons they then proceeded to learn. Even more importantly, the act of venturing predictions prompted them to understand the material more deeply as they engaged in reasoning and sense-making about math instead of mere memorization."

This is a Google Custom Search Engine for the "Math Twitter Blogosphere." Basically, this tool will search numerous blogs from math teachers, coaches, and other other educators from around the world. Type in your content and check out the ideas that appear.

"Empower your students to think critically about data, ask meaningful questions, and communicate their conclusions."

Using this article and the tools listed (http://mentalfloss.com/article/56120/how-far-does-mario-have-run-and-swim-super-mario-bros) as the basis for the lesson: How far does Mario travel in this speedrun? Calculate the proportion of the game that this speedrun completes and leaves incomplete. Based on the time it takes for this speedrun, what's the fastest that you could beat Mario if you completed EVERY level.