Bar Model Approach to PSLE-2019 Questions

“There should be no such thing as boring mathematics”

- Edsger Dijkstra

Bar Model Approach to PSLE-2019 Questions

  Ho Soo Thong       Ho Shuyuan 

Logo
Jan 2020

 

 The following are holistic solutions to some 2019 PSLE questions. 

For each question, bar models help to visualise embedded algebraic relations and then to apply the foundations mathematics together with arithmetic operations and effective algebraic manipulations

 

psle-8-2-19

 Note : It is a counting approach with Greatest Common Unit.

 

psle-14-2-19

Note : visit the site alpha-psle.com for how to construct the bar model and how to perform simple computations.

 

 psle-17-2-19

Remark : It is definitely a challenging problem which involves the ability to identify number patterns, make deduction and find a percentage