Arrays

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Multiplication Math Ping Pong - Commutative Property Math Videos

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Arrays show repeated addition! Lets see with the equation 3 X 4.

We can say the stars are 3 sets of 4 OR 4 + 4 + 4 which is 12

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Did you know many things in our every day lives show arrays?! 

Can you think of something at home or in the classroom that shows an array?

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Minecraft Arrays

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But, what if we said this shows 4 sets of 3 or 3 + 3 + 3 + 3 instead? The answer would still be 12...

Because of the COMMUTATIVE PROPERTY. The commutative property of multiplication states that two numbers can be multiplied in either order. So, 4 X 3= 12 AND 3 X 4= 12. Both ways are correct!

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It is a set that shows equal groups in rows and columns.

Pictures: <a href="http://ntimages.weebly.com/photos.html">http://ntimages.weebly.com/photos.html</a> <a href="https://www.pinterest.com/pin/559501953687138515/">https://www.pinterest.com/pin/559501953687138515/</a> Video: <a href="https://www.youtube.com/watch?v=7e9r8_VOO-8">https://www.youtube.com/watch?v=7e9r8_VOO-8</a>

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1. What is an Array? 2. Examples 3. Repeated Addition Link 5. Commutative Property 4. Arrays in the Real World!

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