## Thursday, October 11, 2012

### The Mystery of Multiplication

Multiplication has come a long way since we were in elementary school. We were handed a list of facts and told to memorize. I don't think we even questioned why 4 x 9 equaled 36. We just accepted it.

Things are so different today. Kids not only have to know that 4 x 9 equals 36, they also have to know why. In other words, how do you know? Prove it to me. Which is perfect for my math motto: PROVE IT! DON'T JUST CHOOSE IT!

Our standards no longer just require students to answer the basic fact. The new standards require students to show what 4 x 9 looks like using groups of objects, arrays, and repeated addition. I have created the following products to help my students master these concepts:

I use this Meaning of Multiplication PowerPoint presentation over a week long period. I take each meaning one day at a time. I embed videos and online games into it, so that we can just click and go.

I also use The Mystery of Multiplication lesson and activity packet to provide lessons, printables, games, activities, graphic organizers, and more.

1. I love mathematics and have trouble understanding why aptitudes rise and fall in developed nations over a few years. It leads me to question the survey methods, of course. :)
Multiplication games

2. I'm just stopping by to say hello to you. I just started blogging last week and have been searching for other third grade blogs. I teach third grade in Washington State...3rd is my favorite of all time. I am your new follower so I just wanted to introduce myself. Hopefully we can all get to know each other in the next few months. Take Care!

Stephanie Ann

1. So glad you have dived into the blogging world. Beware it is addicting! I have 3 right now. Thanks for following!

3. Love it. I teach third grade too.

Yearn to Learn Blog

4. WOW! What a great presentation! It must have taken you a while to put together - but I bet it was worth it when you presented it!