Learning Hub
Free revision material put together by our tutors and arranged subject by subject — mathematics, the sciences, and the language centre.
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The same revision material we use in real lessons. Open it for free — no sign-up.
Mathematics
គណិតវិទ្យាFormula books and revision sheets written for the national examination — every rule in one place, in Khmer.
Grade 12 Math Formulas
Complex numbers, limits, derivatives, integrals, differential equations, conics, solid geometry and probability.
Grade 9 Formulas
Algebra, geometry and trigonometry for the lower-secondary examination.
Past exam papers
Worked solutions to recent national examination papers.
Physics
រូបវិទ្យាFormula sheets and constant tables for mechanics, waves, electricity and modern physics. In preparation.
Grade 12 Physics formulas
Kinematics, dynamics, energy, waves, optics, electricity and magnetism.
Constants & units
SI units, prefixes and the physical constants used in the examination.
Chemistry
គីមីវិទ្យាThe complete reference sheet: the interactive periodic table, ion and radical tables, solubility rules, formulas, redox potentials and organic naming.
Periodic Table of the Elements
All 118 elements, colour-coded by family and searchable by touch — with the full chemistry reference underneath.
Grade 9 Chemistry basics
Atoms, bonding, equations and the mole, written for the lower-secondary syllabus.
Reaction practice
Balancing, stoichiometry and redox drills with instant answers.
Biology
ជីវវិទ្យាDiagrams, definitions and summary tables for cells, genetics, human systems and ecology. In preparation.
Cells & genetics summary
Cell structure, mitosis and meiosis, DNA and inheritance.
Human body systems
Digestive, circulatory, respiratory and nervous systems at a glance.
Language Centre
មជ្ឈមណ្ឌលភាសាGrammar practice, vocabulary lists and examination material for English, Khmer and Chinese.
English
English Tenses — full practice course
All twelve tenses plus a mixed review. Every chapter has an Easy, Intermediate and Advanced test of thirty questions, each with a grammar explanation.
Grammar notes
Articles, prepositions, conditionals, reported speech and the passive.
IELTS vocabulary builder
Academic word lists with example sentences and self-tests.
Khmer & Chinese
Khmer literature notes
Set texts, essay structure and grammar for the national examination.
HSK vocabulary lists
HSK 1 to 4 word lists with pinyin, Khmer glosses and audio.
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