1. Helping Children Make Sense of Numbers
Wednesday, September 18, 2013
Presented By
Sara Delano Moore, Ph. D.
Director of Mathematics and Science at ETA hand2mind
Join our community Implementing Common Core Standards in Math

2. Implementing Common Core Standards in Math
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5. Helping Children Make Sense of Numbers
Math in Context for Primary Grades
Sara Delano Moore, Ph.D.
Director of Mathematics & Science
ETA hand2mind

6. Session Organization Where’s the math? Connecting to the real world
Connecting to parents/families/community

7. Where’s the Math? What do numbers mean? What does addition mean?
Counting & Cardinality
What does addition mean?
Adding to or Putting together
What does subtraction mean?
Taking from or Taking apart

8. What do numbers mean? Counting Words Counting Objects Counting On
Fluency with the counting sequence
Counting Objects
One-to-one correspondence between words and objects
What does How many? mean?
Counting On
Start counting mid-stream

9. What does addition mean?
Adding to
There are some and some more come
We have two apples at home. If we buy three more at the store, how many will we have? (2 + 3 = ?)
Putting together
There are groups; what happens when they combine?
We have two red apples and three green apples. How many apples do we have altogether? (2 + 3 = ?)
You have ten flowers. If six are for grandma, how many are for mom? (10 = 6 + ?)

10. What does subtraction mean?
Taking from
There are some and then some go away
You have five soccer balls. Dad gave some away and now you have two soccer balls. How many balls did Dad give away?
Taking apart
There are groups; what happens when they separate?
There are six toy cars. Four are red and the rest are blue. How many cars are blue? (6 – 4 = ?)

11. What can families do?
Help students develop fluency with counting words and counting objects by practice
“Can you count these? How many are there?”
Identify situations at home where you are adding/subtracting
While playing
While cooking
While shopping
While cleaning up

12. Coming Next Month Building Number Sense through STEM
Measurement contexts
Working with data
Tuesday 29 October 4pm

13. Type your questions in the chat window.
Q & A
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14. Implementing Common Core Standards in Math
A CE certificate for today’s webinar
will be ed to you
24 hours after the live session
Join our community
Implementing Common Core Standards in Math
Invitations to upcoming webinars
Webinar archives and resources
Online discussions
CE quizzes for archived webinars

15. Join us for the next webinar Building Number Sense through STEM, K - 2
Tuesday, October 29, PM Eastern Time
Building Number Sense through STEM, K - 2
Join the Implementing Common Core Standards in Math
community for an invitation

16. Thank you