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Sunday, January 10, 2016

A Little Gift from Me: Ten Frame Cards

This set of 25 full page 10-Frame Cards can be used for Teacher Demonstration purposes when working on the development of the landmark numbers of five, ten, and twenty.  They can be used to support addition strategies, place value, and understanding the "teens".
To obtain your own set, feel free to download it from my Google Documents site by clicking HERE.
Deborah Devine

Wednesday, January 6, 2016

Understanding More About Multiplication Using "LearnZillions", Lesson 3

First, as my 3rd Grade Student continues to understand more about multiplication,  the lesson we did today begins by reviewing what we already know... our schema.

LearnZillions  Internet website has a great video lesson based on the Common Core Mathematics Standard 3.0A.A.1
Interpret products of whole numbers using pictures, arrays, and number lines.

So I have the 3rd Grader watch this video:

Interpret Products by Using Arrays
I believe it summarizes what we have learned about multiplication so far:
1.  Another way to think about this equations 6 X 3 = 18 is Six Groups of Three is the same as 18.

2.  It reviews this information using multiplication word problems.
3.  It reviews the vocabulary of multiplication: number in each group, number of groups, factor, product. 

There are also short video's on interpreting products by using pictures and number lines too. 

My first choice on the video's that I will have students use are usually the Building Block Standards because the the correlation to the Common Core Mathematics Standards. 

I also like the Grade Level Navigator Pages that tell you what video lessons support the Common Core Standards for each grade level.  There are clickable links to those lessons from the pages.

As our lesson continues, we play a short game of Dominoes Multiplication.  It's so easy to do...just use the dominoes that show a 6 on one side of a domino ( 6 X's and the related fact)
 or you can use the free cards from the  

 Sparklebox website: 

Turn all the dominoes facedown on the table. At your turn, say the fact aloud and provide the correct quotient. If you are correct, you keep the domino. If you incorrect, give it to the other player. Player with the most dominoes, when all the dominoes are used, is the winner.  Easy Peasy!


Monday, January 4, 2016

Button Candies Array Cards and the Commutative Property, Lesson 2

The next lesson continues to explore  the
 3 times button candy array cards the 3rd Grader and I 
 made in the last post. (view post)

 In preparation for our lesson, I attached a new card to each of the previously made array cards. My plan is to work with the array cards and their related facts
( the Commutative Property of Multiplication).

I created this worksheet.
First, we skipped counted by threes and sixes.
Next, we cut out the candy button arrays for 3 X 6  and 6 X 3, being careful to trim closely to the edge of the buttons.  Before gluing the arrays to the paper, I ask her if she noticed anything the same about the two arrays?
"Yes, I noticed that they are the same size."
"How can you tell?" I asked.
"Well, if you lay one on top of the other you can see they are the same size."
"Yes, they are the same size or we could say they are conquent in shape and contain the same area."

3 X 6 array on top of 6 X 3 array

We summarized our thoughts by filling in the Venn Diagram in the "how they are the same".
We then glued the arrays on the worksheet, and I asked her why she glued them in different directions on the worksheet.
We summarized the conversation by filling in the areas on the "how they are different " on the Venn Diagram.  We also added the corresponding multiplication equation and the repeated addition equation  to each area. We noted that both equations contained the same factors and the same product.

Lastly, the student cut out and glued (on the blue side of the card) the new arrays for each of the related fact multiplication equations.

More lessons on this same subject in the next post....

Saturday, January 2, 2016

Button Candies To Teach an Understanding of the Meaning of Multiplication

I've been working with a 3rd Grader to develop an understanding of the meanings of multiplication and division of whole numbers through activities and problems involving equal-sized groups, arrays, and area model.  

Today we created these flashcards together that illustrate the meaning of the equation.

I like to think of the equation as a sentence. 
 The sentence says, " Three groups of seven are the same as twenty-one."  

When you read the equation in this way, it starts making sense... not just a multiplication fact that you need to memorize.

Notice that we added more meaning by showing the relationship to repeated addition on the left-hand side of the card.
We used this candies to create the arrays.  The 3rd Grader said that it was the yummiest math lesson ever!

When we created the array for the equation 
3 X 0 = 0
I thought the final model really showed the concept:
We peeled the candy buttons and left a residue that showed 
a value of nothing.
Interestingly, when I gave this student a screening test for her multiplication concepts, it showed that she did not understand the concept of multiplying a factor by zero. 
Now I feel that she does understand

The Multiplication Property of Zero

Future lessons will use the cards that we created. 

What do you think of my idea? 

Please share your ideas in the comment section of this post or share a link to your blog in which you are discussing teaching understanding.



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