Number & Algebra
Whole numbers to algebra. The largest strand and most PSLE marks.
Your child's struggle isn't lack of effort — it's a missing upstream concept the school never had time to find.

Whole numbers to algebra. The largest strand and most PSLE marks.
Length, area, angles, circles. Spatial reasoning under exam pressure.
Picture graphs to pie charts. Data interpretation in every WA and PSLE paper.
Bayesian Knowledge Tracing scores every topic. Live AL band per subject. The dashboard shows exactly where mastery is — and exactly where it isn't.
Ratio weakness usually traces to fractions. Fractions weakness traces to division. Superholic Lab maps the dependency chain and shows you the root cause, not just the symptom.
MCQ for Booklet A. Short answer for Booklet B. Word problems for Paper 2. Adaptive selection from a curated bank, calibrated to your child's current band.
A box contains red and blue marbles in the ratio 2 : 3. There are 30 marbles in total. How many red marbles are there?
When a topic falls below threshold, Miss Wena builds a three-day Plan Quest. Day 1 ramps practice. Day 2 is Socratic dialogue. Day 3 proves mastery.
Type your numerical answer. See the worked solution and misconception trace.
Aisha bought a bag at a 20% discount and paid $96 for it. What was the original price of the bag, before the discount?
Verified against the MOE 2021 Mathematics syllabus, updated October 2025.
Where many children stall. Factors, mixed-number fractions, and decimals arrive together.
13 topics in P4
Every wrong-answer explanation in our bank names the exact misconception.
⅓ + ¼ = 2⁄7
⅓ + ¼ = 4⁄12 + 3⁄12 = 7⁄12
The denominator tells you what type of fraction you have. You cannot add different types without converting first.
$80 after 20% off → original = $80 × 1.2 = $96
$80 = 80% of original → 100% = $80 ÷ 0.8 = $100
The $80 represents 80% of the original price, not 120%. Reversing the discount means dividing, not multiplying.
See the full Mathematics misconception bank by level — or test your child on a topic right now.
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