Showing posts with label gianna. Show all posts
Showing posts with label gianna. Show all posts

6.19.2013

Join Us at the Ballroom Dance FINALS!

Cheer on our Team Blue! 
 TOMORROW, THURSDAY, JUNE 20 @ 5 p.m.

Pictures from the Semi-finals at PS 58!
































12.08.2012

10.22.2012

Math Strategy Alert: Our Friend 10!

   When we multiply we can break apart numbers to  "start with" what we know. 9 out of 10 fourth graders agree that the 10 times table is easy as pie! So why not start there?! Our Good Friend 10 multiplication strategy is an efficient way to work. Try one out yourself!

7 X 17
Gee, I am no good at the 17 times table...
but I know:

7 X 10 = 70!

If I take away 10 from 17, I am left with 7. I just need 7 more sevens!

7 X 7 = 49
I know my square numbers. 

So now I need to do easy addition to get my final answer.
100 + 49 = 149
(7 X 10) + (7 X 7) is the same as 7 X 17