Tuesday, November 2, 2010

Hip, Hip, Array!

We have been exploring arrays!

Row x Column = Product

When the factors were different digits, 
the arrays were in the shape of a rectangle. 
When the factors were the same digit, 
the array was a square!

First we made arrays in teams.

Team Arrays! on PhotoPeach


Then we explored the room and made our own!

3 rows of 4 crayons

5 rows of 3 book tags

6 rows of 5 rings

4 rows of 6 cubes

5 rows of 5 100's blocks

2 rows of 5 clocks

4 rows 5 letters (Looks like fun!)

3 rows of 3 Boxcar Children books

9 rows of 5 spooky rings!

The biggest array of all - 12 rows of 9 stickers!


Which array is your favorite?
Do you know more factors that will make square arrays?
Do you see any arrays in your home?
Tell us about it in your comments!


  1. Dear Mrs. Ranney,

    I am going to tell you 4(four) arrays that make a square:


    Every time you make an array with the same number of rows and columns you get a square.

    My favorite array is MINE. The equation is 5x4=20.

    I am eating a Hershey's chocolate bar. It is an array of 3 rows of 4 chocolate pieces. The equation is
    3x4=12. I love chocolate!

    If I eat 1 row how many pieces will I have left?

    Your student,

  2. Dear Mrs.Ranney,
    I found a array in my house on my keyboard of 5X13=65.

    Your former student,

  3. Dear Mrs. Ranney,

    My favorite array is 12x9.

    Square arrays are:

    I see 1x2 Unicef boxes. We have 4x6 quarters for a coin collection for temple. Lastly, I see 1x3 pumpkins in a row.

    @Ella If you eat a row of chocolate you will have 8 left.

    All the best,

  4. Dear Class,

    My favorite array is MINE because it is the biggest and I like all the stickers that I used.

    I found many arrays in my living room. I found 17 rows of 2 for all the shutters. On the glass doors I found 5 rows of 2. On the glass coffee table I found 2 rows of 2. On my dresser I found 3 rows of 2.

    I love commenting on the blog! I hope I will have enough time to at least do one comment a week! I have 2 questions: How many arrays did you find in your house? What is your favorite part about your array?



  5. @Ella,
    Great job finding four square arrays! I also enjoyed the fact that you found a delicious chocolate array!
    Well done!
    I am happy to hear how enthusiastic you are about the blog! You certainly found many arrays in your house. On the coffee table, what were the 2 rows of 2? On your dresser, what were the 3 rows of 2?
    Keep up the great work.
    Mrs. Ranney

  6. Dear Mrs. Ranney,
    What a great idea to learn math.
    All the arrays are great, so colourful, and inviting to explore.

    I am really enjoying your blog. It helps me to know more what Ariel does at school as we live far away. We live in Israel and we miss Ariel and her family very much.
    Yael, Ariel's granny
    Thank you as your blog gives us another look on Ariel`s activity.

  7. Dear Mrs. Ranney,
    What a great idea to learn math.
    All the arrays are great, so colourful, and inviting to explore.

    I am really enjoying your blog. It helps me to know more what Ariel does at school as we live far away. We live in Israel and we miss Ariel and her family very much.
    Yael, Ariel's granny
    Thank you as your blog gives us another look on Ariel`s activity.

  8. @Aidan,
    You got the correct answer! NOW, if I eat one more row how many pieces will I have left?

    Your friend,

  9. Dear Mrs.Ranney,
    I think that the slide show was awesome! I really liked the arrays.
    I noticed something special about one array. The thing that was special about that array was that on the top half of it there was yellow and on the bottom half of it was blue. I think learning about arrays is so interesting!

    Your Student,

  10. Dear Ella,
    I am going to answer your question. You have 12(twelve) pieces in all, and you said the chocolate bar had 3 (three) rows and 4 (four) little squares in each row. You will have left 8 (eight) pieces of your chocolate bar.
    Now, I have a question for you.

    Did you like your chocolate bar?

    Yours Truly,

  11. Hi Mrs. Ranney and class,

    In honor of family blogging month, I wanted to post a comment about the Ugandan Global project - I was fortunate to be able to go on your walk - you were all great and I was impressed with how much you learned about Uganda. The singing and dancing was a lot of fun as well. And I got a chance to spend more time with Ella - That's always makes my day much better!

    I love your blogs - keep up the great work!

    See you at school!

    George Gans - Ella's Dad

  12. Dear Mrs Ranney and class
    I like how your class used different items to make arrays. My favorite array was the one with the spooky rings.
    from Tarquin in 2t :)

  13. Dear Mrs. Ranney and class,
    I love your blog and the way everyone can learn through it! I can’t think of any better and more fun way to learn new things. When I think of arrays it reminds me of digital camera. I love to take pictures and my digital camera has a two-dimensional array to capture the pictures I take.
    I would love to learn more new things about arrays.
    Michal Ella’s aunt

  14. Dear Mrs.Ranney
    I admire the arrays that you're making. My favorite one was the array with 2 rows of 5 clocks. I remember making them with color blocks, but not all the other objects. More factors to make a square are 100,000,000,000 and 100,000,000,000.

    Liam :D

  15. @Doda Michal,

    Thank you for commenting on the blog! You said you wanted to know more about arrays so I'll tell you some information: arrays have rows and columns. Rows go sideways. Columns go up and down.

    I love you and miss you. Say hi to Noam for me.


  16. Ruti, Ella's GrandmotherNovember 13, 2010 at 11:01 AM

    Dear Mrs. Ranney,

    I am Safta Ruti, Ella's grandmother from Israel. I have been reading your blog since the beginning of the year, and I thoroughly enjoy all your posts. It is so exciting to see what Ella is learning about. The kids in your class are so fortunate to have such incredible opportunities. You make learning fun! I was a teacher for many years. I taught third, fourth, and fifth grade. I was also in charge of the science teaching at the school. Later on, I taught in a teachers' college. Now, I am in charge of some programs at a research institute for teachers professional development.

    I am hoping that Ella's grandfather and I will have a chance to visit this year so we can come visit your class. In the meantime, we visit it virtually through the blog.

    Thank you for including us in your wonderful blog,

    Ruti (Ella's grandmother)

  17. Dear Mrs.Ranney,
    I found an array in my house. It was 2 rows and 4 column. I made it with pencils that I found in my house. My favorite one was 6x6=36. That is a square number.


  18. Dear Mrs.Ranney,
    I think that learning multiplication is really ambitious and arduous. I think that once you get the hang of it, you will get faster and faster just like you did. I bet that when you first started multiplication, it was really ambitious for you. I also bet that you were slow, but now you are not slow because you practiced. That is what will probably happen to everyone. At first when I saw my sister practicing for her multiplication tests, I did not get anything about multiplication, but then I learned in class. Then I knew right away what multiplication was because I had my teacher teach me multiplication, and that is how I am now getting multiplication. Now if I am ever bored, I will just think of things that I can test myself on. I can even think of other school things to study for, like the tests we take. I can practice for those tests too. I will also always love math, just like I said I will always love reading on the Reading Roundup blog.
    Your Student,

  19. Dear Mrs.Ranney,
    I liked learning the arrays. It was very fun. My favorite ones were a
    square number. One was 3x3=9. Another one was 4x4=16. Last is 5x5=25. Those are all of my favorite arrays that are square numbers. I found an array in my house. It was 5 rows of 5 that equals 25.I made it with water bottles. I liked a lot of the arrays. I liked Carly's, Jamie's, Edo's and last is Kevin's. They had very nice pictures. Arrays are very fun to learn and so is multiplication. I like learning about arrays. They are very fun to learn.


  20. Dear Mrs.Ranney,

    I really liked those arrays. I made an array here at home too, I did it on Littlest Pet Shop (animal toys). It was 3x12=36.

    I also made another array tonight. It was the squares on the bay window in my living room. It was 6x4=24. If I took away 8 squares how many would I have left?

    Best Regards,

  21. Dear Mrs. Ranney,

    I still can remember when we just started learning what arrays were. Now I can see the enormous improvement that I have made.

    Since I am way better at multiplication, I do not have to use arrays too often.

    I can't believe that now we are learning 2 digit multiplication problems!

    Warm Regards,



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