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for Math
HK’s most complete DSE + HKAT math practice platform.
One bank from P3 to S6: 26,000+ curriculum-aligned items aligned with AI-generated · DSE-format and HKAT-format exam formats, auto-rendered 3D geometry, per-distractor trap analysis, and a 24/7 Cantonese-speaking AI tutor. Teachers assign in one click and see exactly which traps the class falls into.
26,000+ item bank · AI-generated · DSE / HKAT-format · curriculum-aligned · P3 – S6 · 3D geometry · adaptive self-study · 24/7 AI tutor (Cantonese voice)
Pick from bank or upload your own · AI marks handwriting
Practice items on ESSAi are AI-generated or ESSAi-authored in exam formats (for example DSE / TSA / HKAT format), with reference to the EDB curriculum. They are not HKEAA examination papers, sample papers, practice papers or marking schemes, and are not original exercises from any textbook or commercial assessment publisher. See our Copyright Notice. Copyright Notice
Math teacher pain · Essai solution
HKAT / DSE prep needs volume, but practice banks are scattered and painful to assign.
26,000+ questions in one bank: filter by grade × topic × difficulty, assign in one click, auto-marked.
Students don’t learn from wrong answers — teachers can’t debrief every trap 1-on-1.
Per-distractor trap analysis exposes why each wrong choice was tempting; class report ranks the top traps for the cohort.
Ability range in one class means uniform homework either bores the top or crushes the bottom.
Adaptive self-study: AI adjusts next-item topic × difficulty based on each student’s history. Weaker students fill gaps; stronger students level up.
Students get stuck at night — teachers can’t be on call 24/7.
24/7 AI tutor: ask by typing or speaking (Cantonese, Putonghua, or English). Tutor carries the current question as context and walks through the solution.
Key features
26,000+ item bank · AI-generated · DSE / HKAT-format
Aligned with DSE Core Paper 1 / 2 and HKAT exam formats — 26,000+ items including 3,000+ at DSE level, indexed by topic × difficulty × grade. Continuously expanded.
P3 – S6 coverage
From P3 through S6, aligned with the HKEAA / EDB curriculum. Each grade opens an independent topic map.
Multiple difficulty tiers
Basic / Intermediate / Advanced / Challenge tiers coexist. Each item difficulty-tagged; students pick or let AI pick.
3D geometry · auto-rendered
Circles, triangles, and solids (prisms, cones, spheres) rendered live with rotatable viewpoints. No PDF scans. Students can explore from any angle.
Trap analysis per distractor
Every distractor is tagged with its trap type (sign error, unit-miss, formula inversion, etc.). Class report ranks the cohort’s most-fallen-into traps.
Adaptive self-study
AI adjusts next item (topic × difficulty) based on history: correctness, hint-tier unlocks, time-per-question. Patches gaps, stretches strengths.
24/7 AI math tutor
Ask by typing or voice — Cantonese, Putonghua, or English. Tutor carries current question as context, breaks down steps, gives counter-examples, proposes similar items.
Teacher homework + class trap heatmap
Assign by topic × difficulty; auto-marked; class report shows weakness heatmap AND top distractor traps across the cohort.
How it works
Pick grade + topic (or let AI pick)
Student picks any P3 – S6 grade + topic, or lets the adaptive engine choose based on past performance.
Solve · instant trap debrief
Wrong answers trigger per-distractor trap analysis + hint tiers. Or ask the AI tutor in Cantonese voice.
Teacher gets the report
Class weakness heatmap + top distractor traps + per-student progress. One-click Word export.
Topics by grade
Tap any grade below to expand the full EDB-aligned topic list for that year.
P3
Key Stage 2 · Multiplication, Division, Fractions (I), Bar Charts
12 topics · aligned to HKEAA / EDB curriculum
items in the bank · AI-generated · DSE / HKAT-format · curriculum-aligned · P3 – S6 · 4 difficulty tiers · 3D geometry · trap analysis · 24/7 AI tutor (Cantonese / Putonghua / English)