The learning journal.
Long-form guides to the ideas students search for most — each one connected to the lessons and chapters it belongs to.
Mathematics
01Common Mistakes in Algebra (and How to Avoid Them)The algebra mistakes almost every student makes — sign errors, bracket slips, fraction mix-ups — with worked examples showing the correct method.Read article →02How to Prepare for Your Mathematics ExamsA realistic exam preparation plan for school mathematics: what to study first, how to use past papers, and the final-week checklist.Read article →03How to Revise Mathematics EffectivelyA practical revision method for school mathematics: small focused sessions, active recall, past-paper technique and how to use worked examples properly.Read article →04What Are Linear Equations? A Complete GuideDiscover what linear equations are, why they are called linear, and how they model real life, with worked examples that build lasting understanding.Read article →05How to Solve Linear Equations Step by StepMaster the balancing method for solving linear equations, from one-step equations to brackets and variables on both sides, with fully worked examples.Read article →06Algebraic Expressions ExplainedLearn the language of algebra: terms, coefficients, variables and like terms, then simplify and expand expressions with step-by-step worked examples.Read article →07Fractions: A Complete Guide for StudentsA complete student guide to fractions: meaning, equivalent fractions, simplifying, all four operations and mixed numbers, with clear worked examples.Read article →08Understanding Quadratic EquationsUnderstand quadratic equations from the ground up: the parabola connection, solving by factorisation, the quadratic formula, and discriminant intuition.Read article →
Physics
09What Is Force? A Simple Guide for StudentsForce is a push or pull measured in newtons. Learn about contact and non-contact forces, resultant force and F = ma with clear worked examples.Read article →10Speed, Velocity and Acceleration ExplainedConfused by speed, velocity and acceleration? This guide explains scalars vs vectors, the speed equation and a = (v - u)/t with step-by-step examples.Read article →11Newton's Laws of Motion ExplainedNewton's three laws of motion in plain language with everyday examples, F = ma worked examples, action-reaction pairs and common exam misconceptions.Read article →
Chemistry
12Understanding Atoms and Atomic StructureDiscover what atoms are: protons, neutrons and electrons, atomic and mass numbers, electron shells, and the story from Dalton to Bohr, with worked examples.Read article →13Elements, Compounds and Mixtures ExplainedElements, compounds and mixtures explained: clear definitions, chemical versus physical combination, separation techniques, particle diagrams and exam tips.Read article →14Acids and Bases: A Student GuideAcids and bases explained for students: properties, the pH scale, indicators, neutralisation with worked equations, everyday examples and safe handling basics.Read article →
Biology
15What Is a Cell?Discover why the cell is the basic unit of life: cell theory, the jobs of key subcellular structures, and how cells build tissues and organs.Read article →16Plant and Animal Cells ExplainedCompare plant and animal cells structure by structure: the three plant-only features, labelled descriptions, and specialised cells in action.Read article →17Photosynthesis ExplainedMaster photosynthesis for IGCSE: the word and symbol equations, how limiting factors shape the rate, and why this one process underpins almost all life.Read article →
Computer Science
18What Is an Algorithm?What is an algorithm? Everyday step-by-step instructions, pseudocode basics, and a worked linear search showing correctness and efficiency in action.Read article →19Variables and Data Types ExplainedVariables are named boxes storing program values. Learn Python assignment, the five core data types with examples, why type errors happen, and constants.Read article →20What Is a Computer Network?What is a computer network? See how LANs and WANs differ, how routers and switches connect devices, and what the internet and IP addresses really are.Read article →