1. Mathematical Models: Number Bonds
Parent night
Mathematical Models:
Number Bonds
whole
part

2. Where are we?
WCSD has had an elementary math and ELA coach for this past year. We focused on bringing back strategies and models for teachers from NTI.
Now that teachers are becoming more comfortable, we need to be proactive and show parents how to help their child and what we are doing in the classroom.

3. Parent Nights for the Year
September – Number Bonds (K-5)
October – Number Disks & Place Value Chart (1-5)
November – Array and Area Models (3-5)
December – Number Lines (K-5)
January – Ten-Frame & Rekenrek (K-1)
February – Tape Diagrams (K-1, 2-4, 5)
March – Tape Diagrams (K-1, 2-4, 5)
April – Problem - solving with models
May – Summer Math

4. What are Mathematical Models?
Mathematical models are a set of concrete and pictorial models that students use repeatedly across grade levels.
Over time, students become familiar with these models and use them in more complex ways to solve problems.
Mathematical models become part of their tool box, which will help them have a quicker understanding of concepts as they are introduced.

5. What are Number Bonds?
Number bonds are a pictorial representation of part-part-whole relationships.

6. What are Number Bonds?
Smaller numbers (the parts) make up larger numbers (the whole)
part + part = whole
whole – part = part

7. Important things to remember
concrete objects  pictorial representations  abstract

8. Important things to remember
Orientation of the number bonds does not change its meaning.

9. Important things to remember
Number bonds of 10 are the most important in the lower grade levels.

10. Grades Kindergarten – Second Grade
What do they look like?
Adding numbers
Decomposing numbers
Show several examples on a SMART Board or document camera.

11. Kindergarten

12. First Grade

13. Second Grade

14. Grades 3 - beyond What do they look like? Fractions Time
Conversion of units
Adding/subtracting larger numbers
Show several examples on SMART Board or document camera.

15. Third Grade

16. Fourth Grade

17. Fifth Grade

18. What can you do at home? Make and Take activities Apps
Show your child multiple ways to solve problems

19. Make and Take Activities
Plate activity
Hanger and clothespins
Puzzles
Bracelets
Ziploc bag with objects

20. Activities for you!

21. Other resources You tube video How to Implement a Story of Units
Apps: Number Bonds Flash (android)
Online games:
Number Bond Parent Pamphlet
Make this into a pamphlet to hand out to parents: Ideal to have a pamphlet for each mathematical model.