Welcome to the Mathtrain.com with Mr. Marcos ...
How to Round Decimals. (originally aired 08/1...
Rounding a Decimal (part 2). (originally aire...
Using the LCD to Add Fractions, with “Billy...
Order of Operations (GEMDAS), with “Bob”....
Cross-canceling (multiplying fractions), with...
“Bob” interviews a parent about mathtrain...
Prime Factorization, with “Bob”. (origina...
Parent, Chris, is interviewed by “Bob” vi...
This Jing thing. (originally aired 10/01/07) ...