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La réponse en bref

Seize sujets issus de notre enseignement des niveaux 1 à 10, du GCSE et du SAT, chacun rédigé comme une question unique avec une réponse directe et une méthode résolue. Ce sont les explications que nos professeurs donnent en cours, mises par écrit.

• How to Learn Times TablesMathématiquesStart with the 2, 5 and 10 tables, use the swap rule to halve the work, build hard facts from near ones, then drill only the ten or so that stay slow.
• How to Do Long DivisionMathématiquesDivide, multiply, subtract, bring down — the four-step cycle repeated once per digit. A full worked example of 4728 ÷ 12, plus how to handle remainders.
• How to Convert Between Fractions, Decimals and PercentagesMathématiquesDivide top by bottom for a decimal, multiply by 100 for a percentage, and reverse both to go back. Worked conversions for 3/8, 0.375, 37.5%, 45% and 9/20.
• How to Solve Basic Algebra EquationsMathématiquesClear brackets, gather letters on one side and numbers on the other, then divide. A full worked solution of 3(2x + 1) = x + 18, with the check that proves it.
• How to Solve Simultaneous EquationsMathématiquesScale the equations until one letter's coefficients match, add or subtract to remove it, then substitute back. Full worked solution of 3x + 2y = 19 and 4x − 5y = 10.
• How to Solve Quadratic EquationsGCSE MathematicsRearrange to ax² + bx + c = 0, factorise into two brackets, or use the quadratic formula. Worked examples of x² + 5x = 24 and 3x² + 5x − 1 = 0, both checked.
• How to Use Pythagoras' TheoremMathématiquesAdd the squares to find the hypotenuse, subtract to find a shorter side. Worked examples with a 5-12-13 triangle and a hypotenuse of 10, plus the converse test.
• How to Use SOHCAHTOAGCSE MathematicsLabel opposite, adjacent and hypotenuse, tick the two sides that matter, then pick the ratio that uses both. Worked examples finding a side and finding an angle.
• What Is Probability and How Do You Calculate It?MathématiquesProbability runs from 0 to 1. Count favourable outcomes over the total, use 1 − P(A) for the opposite, multiply for "and", add for "or", adjust without replacement.
• What Is Photosynthesis?SciencesPlants use light energy to build glucose from carbon dioxide and water, releasing oxygen. The equation, the two stages, and the factors that limit the rate.
• What Are the Parts of a Cell and What Do They Do?SciencesNucleus, mitochondria, ribosomes, membrane — what each organelle does, how prokaryotic and eukaryotic cells differ, and what plant cells have that animal cells lack.
• How to Read the Periodic TableSciencesSeven periods, eighteen groups, ordered by atomic number. What each box tells you, why a group shares its chemistry, and where the metals and non-metals sit.
• What Are Newton's Three Laws of Motion?SciencesAn object keeps its velocity unless a resultant force acts; that force equals mass times acceleration; and forces come in equal, opposite pairs on two objects.
• How to Structure an EssayAnglaisWrite the thesis first, order the reasons, build each paragraph on one idea with evidence and explanation, and close by readdressing the argument you made.
• How to Improve Reading ComprehensionAnglaisPreview the text, read in short chunks and retell each one, notice where understanding stops, and answer questions by returning to the line that proves it.
• What Is on the Digital SAT Math Section?Préparation au SATTwo 35-minute modules, 44 questions, calculator throughout. Algebra and Advanced Math are 35% each; Problem-Solving and Data Analysis and Geometry 15% each.