Posts Tagged ‘teacher’

Mathtrain.TV:Ep.127, Visual Look at Area of a Circle

Monday, April 7th, 2014

Let’s take a visual look at the area of a circle.

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Part of the student-created tutorial project at Mathtrain.TV.
Mathtrain.TV is a free, educational “kids teaching kids” project from Mr. Marcos and his Students at Lincoln Middle School in Santa Monica, CA.
StudentCreated.TV is a free site for sharing student-created tutorials for all school subjects. Both sites are mobile-enabled.

Mathtrain.TV, Ep.107, Complete the Square

Saturday, March 24th, 2012

An algebra student had this question for homework.  This is a tutorial for a completing the square problem from Mathtrain.TV.


Mathtrain.TV, Ep.106, Visual of Subtracting Fractions (mixed numbers)

Saturday, March 3rd, 2012

A visual look at subtracting fractions.  This goes along with another video we made several years ago. Here, we use pizza as a way to help visual this subtraction of fractions.

Original video with alternative method is at .
Part of our Mathtrain.TV Project.


Mathtrain.TV:Ep.98 Special Episode: FluidMath

Wednesday, June 8th, 2011

This is a special episode of 2 demo-screencasts of FluidMath.

FluidMath is a cool, new math software for tablet pc and IWB users.  It can recognize handwriting and then solve, graph and animate on the fly.


Their Web site is


Mathtrain.TV: Ep.97 Google SketchUp is Cool

Thursday, May 26th, 2011

A quick look at how easy it is to create cylinders and prisms in Google SketchUp (free).


Mathtrain.TV: Ep.91, Percent of a Number

Saturday, February 12th, 2011

Here is a look at how to figure out “percent of a number” problems using a proportion.


Mathtrain.TV: Ep.89, Unit Price

Saturday, January 22nd, 2011

Let’s find which is the better buy!  We will find the unit price (unit rate) to compare the two items.


Mathtrain.TV: Ep.88, Metric Conversions II

Wednesday, January 5th, 2011

Another look at metric conversions.


Mathtrain.TV: Episode 80, The MegaHunk Bar

Monday, November 8th, 2010


This is the story of Rob and the MegaHunk Chocolate Bar that he ate.  But he did not eat the whole thing.  And he did not even start off with an entire bar.

See how to solve this several ways, including visually.  This problem was adapted from my former colleague, Dr. Marcy, and his Marcyworks!

As seen on Mathtrain.TV!

Mathtrain.TV: Episode 75, Exponents Part2

Tuesday, September 14th, 2010

Part 2 of our look at Exponents, Powers and Bases.


Mathtrain.TV: Episode 74, Exponents Intro

Sunday, September 12th, 2010

Intro to powers, exponents and bases from section 1.2 in our 6th grade textbook.


Mathtrain.TV: Episode 70, Roots of Mathematical Terms

Tuesday, May 25th, 2010

Greek and Latin roots of some mathematical terms.