## Math Labs
*October 11, 2010*

*Posted by Edward Deleon in : algebra, geometry, graphing calculators, Math, media , add a comment*

Video-based critical thinking activities for math are a rare thing. Math videos tend to focus too heavily on algorithms. And do we have to see a sweatered chap standing at a whiteboard “teaching” us math?

Media4Math’s Math Labs are short video clips that engage students critically. For example, this Math Lab explores slope using a fairly common experience: walking up a staircase. Students intuitively know that it’s easier to walk up a steep set of stairs in a zigzag manner than straight up the stairs, but they have never seen the connection between that experience and the concept of slope. Use this video to anchor the concept of slope, and in the process bring in some data gathering.

## Math and Forensics
*October 9, 2010*

*Posted by Edward Deleon in : Uncategorized , add a comment*

Accident investigators can determine the speed a car was going based on measurements of skid marks on the road. The math behind this technique is a great example of quadratic functions. Media4Math’s *Algebra Applications: Quadratic Functions* gives a detailed derivation of this formula. You can find the video here:

What are some other forensics applications that you use in your classroom?

## Why Media4Math?
*October 9, 2010*

*Posted by Edward Deleon in : algebra, geometry, graphing calculators, math, media, Uncategorized , add a comment*

Math is about words and numbers. And the words are not just exotic equations and formulas, but real words. Because math is about the real world.

Every story is at some level a story about math. The mission of Media4Math is to tease out these stories, to show that not only are there cool applications of math, but that math itself is an infinite set of stories.

Our newest series, *Geometry Applications, *is true to the mission. We bring stories from around the world and use them to tell a tale about geometry. For example, in the *Triangles *video we talk about the strength and sturdiness of the Eiffel Tower. Due entirely to its use of triangular trusses. The inherent geometry of the truss is real story behind the Tower. This is why, although Hitler asked that the Tower be destroyed, it didn’t happen. The Tower was too sturdy, even for tyrants.

You’ll have plenty of opportunities to view our video content. Go to our Web site (www.media4math), our YouTube channel, and follow us on Twitter and Facebook.