Posts Tagged ‘prime’

Mathtrain.TV:Ep.123, GCF LCM Ladder Method with Kermit

Friday, July 19th, 2013

Find the LCM and GCF using the ladder method, with 7th grader Kermit.
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.


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 is a free site for sharing student-created tutorials for all school subjects. Videos also play on mobile devices.


Mathtrain.TV: Episode 37

Sunday, December 21st, 2008

Finding the LCM.


Mathtrain.TV: Episode 7

Sunday, September 2nd, 2007

Prime Factorization, with “Bob”.

(originally aired 09/02/07)