Compilation of all things math --- questions obtained via students' consultation, related math sites. * Do also check out my EduTech contributions at go.gov.sg/changcl
Wednesday, September 24, 2025
Math is at the heart of all fields
Tuesday, September 23, 2025
Thursday, September 11, 2025
PSLE pattern
How small is small ( Measurement )
Thursday, September 4, 2025
Wednesday, September 3, 2025
Well-intended advice for tackling TFNPTT questions (True, False, Not Possible to Tell)
Well-intended Advice:
● For True statements, circle the facts from your observation or calculation to justify the truth
● For False statements, circle the untrue number, word or phrase in the statement and
○ write the “correction” or “OTB” (ought to be”) that would correct the false statement to true.
OR
○ Cite numerical inconsistencies that doomed the statement to be untrue. (eg. when certain numbers have to be odd, or say multiples of 3 etc, as dictated by certain ratios as stated in the question, and yet are inconsistent)
● For Not Possible to Tell (NPTT) statements, circle the ambiguous word/clause and cite other possibilities to satisfy the claim of the statement.*
* Usually statements are deemed NPTT when the numerical quality is consistent, but there exist more than one possibility ie. “spoilt for choices”.