## Monday, December 8, 2008

### Hip Hip Array!

The concept of multiplication is our current unit of study in math. Multiplication is repeated addition. We have also learned about arrays.

Our math glossary defines an array as: An arrangement of objects in rows and columns.

ROWS go across.

C
O
L
U
M
N
S

g
o

d
o
w
n

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Here are some arrays we found around our school. Notice how we used synonyms for the word see!

While I was reading a book outside at recess, I glanced over and saw an array of windows.

3 x 4 = 12 windows

Taylor S.

When I was seated at my desk, I peeked over my chair and saw an array of giant paper coins.

2 x 5 = 10 giant coins

By Matthew

When I was at my desk, I spied an array of pictures called Take your Acorn on Vacation. There were four rows of two.

4 x 2 = 8 vacation photos
By Behyan

When I was looking at the world map, I noticed there was an array of squares in the map key.

2 x 5 = 10 land and water squares

By Shane F.

While I was outside on the jungle gym, I glanced across the yard and saw an array of benches.

1 x 4 = 4 benches

By Kyle

While I was in the library, I observed an array of math books.

7 x 4 = 28 math books

By Lexi

When I was sitting in class, I looked at the computers and I saw an array.

1 x 3 = 3 computers

By Shane J.

I was in the P.E. equipment shed, and I saw an array of bowling pins.

2 x 4 = 8 pins

Taylor G.

While I was seated at my desk, I spotted a Parts of Speech poster array.

3 x 2 = 6 Parts of Speech posters

By Sean

While I was walking around the classroom, I stopped and observed the elapsed time stories array.

2 x 8 = 16 elapsed time stories

By James

When I was walking by the world map, I spied an array of cubbies.

8 x 3 = 24 cubbies

By Amanda

While I was walking around the non-fiction section of the library,
I stared at the Zoo Book rack. The columns were easy to see. There were two columns.

Some students thought this was

2 x 23, rather than

23 x 2

Solution?

*

*

*

Rotate the picture!

Now you see two rows.

2 x 23 = 46 Zoo Books

By Chloe

When I was walking around the room, I spied the dictionaries. The two columns were easy to see. Some students thought
this was 2 x 10 rather than 10 x 2.

Solution?

*
*
*

Rotate the picture!

Now I see 2 rows x 10 = 20 dictionaries
By Alasia

The next few arrays are special. Both of the factors are the same and they make a square. We call them the square products!

When I was inside the classroom, I spied one row of one quarter.

1 x 1 = 1 quarter

By Emily

While I was walking around the classroom, I spotted our Chinese character stories in an array.

4 x 4 = 16 Chinese character stories

I also noticed that both factors are the same, so it is a square.
By Jonah

I stared at the board in the classroom and saw a penny array. I noticed it was a square. That means it has the same number of rows and columns.

5 x 5 = 25 pennies

By Warren

While I walked through a teacher's room, I looked at an array of boxes.

10 x 10 = 100 boxes

By Marcus

While I was strolling around the room, I looked at the multiplication chart. There were 13 rows and 13 columns.

14 x 14 = 116 squares

Here are two arrays of yellow and orange zinias that Mrs. Yollis planted.

I see 3 rows of 2 on the left.

I see 3 rows of three on the right.

How many yellow and orange zinnias?

Hint: Use multiplication and addition!

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*

*

Answer:

(3 x 2) + (3 x 3)

6 + 9 = 15 yellow and orange zinnias!

Do you see any arrays in your life? Tell us about them in the comments!

* * * * *
Extra Credit from Shane J.!
Shane sent us a hyperlink to a photo of his French doors.
Can you name the array?

#### 16 comments:

1. Dear Mrs.Yollis's class,
I love the arrays that the class thought of.

From,
CHLOE :-)

2. Mrs. Yollis' class,

What a fantastic job! Who knew there were so many arrays right there in your school?

Y'all "rule!" (Get it? For math class? You "rule"... like a ruler? Oh, nevermind!) *wink*

3. Dear Chloe and Alasia,
I think you are soooooooo creative!:)I loved how you rotated the picture!

Your friend,
Lexi

4. Dear Class,

I really enjoyed looking at the photos of the arrays that were found around school. Great observational skills! I liked your descriptive sentences, too!

I have been seeing arrays everywhere now! As I was walking around my house this morning I noticed an array of water glasses in my kitchen cupboard. The glasses were in three rows of three.
3 x 3 = 9 glasses.

Having them in an array made my cupboard look very organized, too!

Mrs. Yollis

5. Dear Mrs. Yollis,

I found an array in my home. It is two french doors next to each other- like this:-)

http://www.everseal.co.uk/images/french_doors_4.jpg

It has 2 arrays of 2x5 or 5x2. It has 10 window panes in each door and 20 windows total.

From,

Shane J. :-)

6. I saw the door in the office was a array,three mutiplyed by three is nine windows!

C.B.J

7. Dear Mrs. Yollis,

While I was eating dinner in my kitchen, I noticed
an array of cabinet doors.

2 rows of 4 = 8 cabinets doors!

From,
Taylor G.
:-D

8. Hey Classmates,

Speaking of arrays, I noticed one upstairs on a picture in my house. It was four rows of tiles, two in each row.

4 x 2 = 8 tiles

From, Kyle

9. Dear Shane J.,
Thanks for sharing the great array that you found in your house! I noticed that you tried to add a hyperlink to your comment! I love it! You are really advanced!

I don't think the comment section is set up to accept hyperlinks. I am going to add it to our blog! Look for it at the bottom of the Hip Hip Array post!

Thank you!
Mrs. Yollis :-)

10. Dear Marcus,
I liked that you picked a square number. 10 and 10 are good factors and they make a square!

:-)
Taylor S.

11. Dear Class,
I love the synonyms! I wish my junior high students would use such a wide array of synonyms.

Mrs. White
Holbrook, AZ

12. You did an awesome job!!! I loved all the examples of arrays.
from: Lisa, (Kindergarten teacher)

13. Dear Sean,
I liked the way you decided to do a parts of speech array.At first, it was not even an array!You just thought of it in your mind.
Your friend,
Jonah

14. Dear Mrs. Yollis,

In my house I spotted 4 rows of 2 little lights.
4 x 2 = 8 little lights
this is what it looks like....

o o

o o

o o

o o

From,
Taylor S.

From,
Taylor S.

15. Dear Taylor S.,

I love that you "spotted" a new array at your house! I have been noticing arrays everywere since we did that lesson.

That was interesting how you were able to show us the rows and columns in you comment using letters. You're a great thinker!

Sincerely,
Mrs. Yollis

16. Dear Mrs. Yollis' Class,

You are AMAZING! I am SO impressed with your blog entries. Your content is thoughtful, informative and interesting. Terrific pictures too, they really support your message. You will need to show me how you do it some time during computer lab.

Keep bogging!
Ms. Miller (your Computer Teacher)

* * *
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1. Write your comment in the box below. Be sure that you have proofread it for spelling, grammar, punctuation, and capitalization. Students should have a parent check it!

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3. Click "Publish your Comment". You may preview your comment before publishing if you'd like.

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:-) Mrs. Yollis