Bar Model Approach to PSLE-2019 Questions
Ho Soo Thong Ho Shuyuan
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
Note : It is a counting approach with Greatest Common Unit.
Note : visit the site alpha-psle.com for how to construct the bar model and how to perform simple computations.
Remark : It is definitely a challenging problem which involves the ability to identify number patterns, make deduction and find a percentage