This session links bar models with linear algebra including systems of linear equations. Examples on how to differentiate instruction for advanced students by tweaking existing problems are shown. Also the use of paper strips to help struggling learners are demonstrated.

1. Weston Public Schools, CT
Bar Models in Primary Mathematics
Grades 7 – 8 & Special Education
Yeap Ban Har
Group 2
August 22, 2013
12 noon to 3.00 p.m.
www.banhar.blogspot.com

9. Jim bought some chocolates and gave half of them to Ken. Ken bought some sweets and gave
half of them to Jim.
Jim ate 12 sweets and Ken ate 18 chocolates.
After that, the number of sweets and chocolates Jim had were in the ratio 1 : 7 and the
number of sweets to chocolates Ken had were in the ratio 1 : 4.
Source | Singapore Examination and Assessment Board

11. Source | Keming Primary School, Singapore
Lesson 8 |

12. 5
2
of the boys and
7
3
of the girls chose to go on a field trip.
In a group of 94 students, 39 chose to go on a field trip.
Lesson 9 |

13. Progression in Bar Modeling
K – model with real objects or pictures
1 – model with pictures and unifix cube
2 – model with bar for known quantities
3 – model with bar for unknown quantities
4 – model with bar for more than one variable
5 – model using complex strategies such as cutting the bar
Summary |