(70%) (2 Votes)

Ms. Adrienne Doung from LBUSD is a middle school math coach. She
demonstrates how to use the ladder method to find the LCM and GCF if
given three or more numbers. Questions this video answers How do I...

Ms. Adrienne Doung from LBUSD is a middle school math coach. She

demonstrates how to use the ladder method to find the LCM and GCF if

given three or more numbers. Questions this video answers How do I

find the least common multiple (LCM) of three numbers? How do I find

the greatest common factor (GCF) of three numbers? How do I use the

ladder method if I have three numbers? How do I use the slide

method?

demonstrates how to use the ladder method to find the LCM and GCF if

given three or more numbers. Questions this video answers How do I

find the least common multiple (LCM) of three numbers? How do I find

the greatest common factor (GCF) of three numbers? How do I use the

ladder method if I have three numbers? How do I use the slide

method?

Comments (2 of 2)

Ms. Doung organizes her work nicely and makes it easy to follow. It would be nice if she explained the importance of using prime numbers in the process of finding GCF and LCM. I like the ladder method and the trick of drawing the L and G around the prime factors. It might also be nice to play around with the GCF and LCM by proving them using different methods or even refer back to the original numbers and explain the LCM and GCF in terms of the original numbers.

In this video, I really like that everything stays on one screen. This way, there is no confusion or problems with missing steps from a previous screen. I think it might be helpful if the ladder is kept a little bit neater at the end. It gets a little crazy with the colors and the circling and writing multiplication signs between all of the numbers.