videos khan academy

Écrit par Super User le . Publié dans Soutien scolaire

Bienvenue sur Khan Academy où vous pouvez apprendre facilement et en vidéo les cours les plus difficiles de maths, physique, finance, économie, chimie, biologie... !

 

Indépendamment du soutien direct que vous trouverez chez Math Assistance, vous pouvez préparer vos cours ou les compléter dans des sites tels que celui de Khan Academy. Math Assistance met ses locaux à la disposition du fan club parisien pour promouvoir cette formation gratuite pour tous. Lors des prochains meetups, Math Assistance vous orientera vers les videos les plus comptaibles avec les programmes scolaires français. Ces videos sont en anglais mais c’est un très bon moyen pour réviser au même temps les maths et l’anglais.

 

Khan Academy est bien connu pour sa collection de plus de 3000 videos très pédagogiques. En ce qui concerne las Maths, les leçons couvrent tout, depuis les leçons sur l'addition de base jusqu’à des leçons sur la trigonométrie. Chaque leçon comprend des exercices pratiques pour les élèves. S'ils sont coincés sur un problème, ils peuvent cliquer sur un bouton "conseil" ou regarder la leçon vidéo correspondante. Sur le tableau de bord des exercices sur Khan Academy il y a une feuille de route pour les leçons qui montre aux visiteurs un parcours recommandé à suivre pour bien s’améliorer en mathématiques.

En tant qu’élèves de Math Assistance, nos professeurs sont là également pour vous assister directement si vous faites partie du club Khan academy de Paris.

 

Exemple de cours :

Algebra

Conceptual videos and worked examples from basic algebra through algebra 2. Includes videos from the former algebra worked examples playlists.

What is a variable?Why aren't we using the multiplication signExpressions with two variablesCombining like termsCombining like terms and the distributive propertyWhy we do the same thing to both sides: simple equationsRepresenting a relationship with a simple equationOne step equation intuition exercise introAdding and subtracting the same thing from both sidesIntuition why we divide both sidesOne-Step Equation IntuitionWhy we do the same thing to both sides two step equationsExample: solving equationsExample: Dimensions of a gardenWhy we do the same thing to both sides multi step equationsChallenge Example: Sum of integersEquations with Variables on Both SidesSolving Equations with the Distributive PropertySolving equations with the distributive property 2Algebraic Word ProblemAbsolute Value EquationsAbsolute Value Equations 1Inequalities on a number lineOne-Step InequalitiesOne-Step Inequalities 2Multi-Step InequalitiesMulti-Step Inequalities 2Compound InequalitiesAbsolute Value InequalitiesOrder of Operations ExampleVariables Expressions and EquationsEvaluating Expressions with Two VariablesVariables and Expressions 1Algebra: Linear Equations 1Evaluate a formula using substitutionExample of Solving for a VariableSolving for a VariableSolving for a Variable 2Simple EquationsSolving One-Step EquationsSolving One-Step Equations 2Algebra: Linear Equations 2Solving Equations 1Two-Step EquationsNew Operator DefinitionsSolving Equations 2Equations 3Multi-Step EquationsMulti-step equations 1Multi-step equations 2Algebra: Linear Equations 3Algebra: Linear Equations 4Equation Special CasesInteger sumsRearrange formulas to isolate specific variablesBasic Rate ProblemAveragesPercent ProblemsWord Problem Solving 3Taking percentagesGrowing by a percentageAnother Percent Word ProblemMore percent problemsDirect Variation 1Proportionality Constant for Direct VariationDirect Variation Application

Solving a system of equations or inequalities in two variables by elimination, substitution, and graphing.

Trolls, Tolls, and Systems of EquationsSolving the Troll Riddle VisuallySolving Systems GraphicallyExample 1: Graphically Solving SystemsExample 2: Graphically Solving SystemsExample 3: Graphically Solving SystemsKing's Cupcakes: Solving Systems by EliminationSimple Elimination PracticeHow many bags of potato chips do people eat?Systems with Elimination PracticeExample 1: Solving systems by eliminationExample 2: Solving systems by eliminationExample 3: Solving systems by eliminationTalking bird solves systems with substitutionPractice using substitution for systemsExample 1: Solving systems by substitutionExample 2: Solving systems by substitutionExample 3: Solving systems by substitutionInconsistent systems of equationsInfinite solutions to systemsPractice thinking about number of solutions to systemsWhy we do the same thing to both sides basic systemsProblem Solving Word Problems 2Graphing systems of inequalitiesGraphing systems of inequalities 2Graphing systems of inequalities 3System of Inequalities ApplicationSystems of Three VariablesSystems of Three Variables 2Solutions to Three Variable SystemSolutions to Three Variable System 2systems of equationsOfficer on HorsebackPatterns and EquationsTwo Passing Bicycles Word ProblemPassed Bike Word ProblemPassing TrainsOvertaking Word ProblemU06_L1_T1_we1 Solving Systems by GraphingSolving Systems of Equations by EliminationSolving Systems of Equations by MultiplicationSystems and rate problemsSystems and rate problems 2Systems and rate problems 3Mixture problems 1Mixture problems 2

Solving exponential and radical expressions and equations. Using scientific notation and significant figures.

Understanding ExponentsUnderstanding Exponents 2Exponent Rules 1Exponent Rules 2Level 1 ExponentsLevel 2 ExponentsNegative Exponent IntuitionZero, Negative, and Fractional ExponentsLevel 3 exponentsExponent Rules Part 1Exponent Rules Part 2Exponent Properties 1Exponent Properties 2Exponent Properties 3Exponent Properties 4Exponent Properties 5Exponent Properties 6Exponent Properties 7Exponent Properties Involving ProductsNegative and Positive ExponentsExponent Properties Involving QuotientsRational Exponents and Exponent LawsMore Rational Exponents and Exponent LawsSimplifying Expressions with ExponentsMultiplying and Dividing Rational Expressions 1Multiplying and Dividing Rational Expressions 2Multiplying and Dividing Rational Expressions 3Simplifying Expressions with Exponents 2Simplifying Expressions with Exponents 3Fractional Exponent Expressions 1Fractional Exponent Expressions 2Fractional Exponent Expressions 3Pythagorean Theorem 1Pythagorean Theorem 2Pythagorean Theorem 3Evaluating exponential expressionsEvaluating exponential expressions 2Evaluating exponential expressions 3Scientific notation 1Scientific notation 2Scientific notation 3Scientific Notation IScientific Notation Example 2Scientific Notation 3 (new)Scientific Notation ExamplesMultiplying in Scientific NotationSignificant FiguresMore on Significant FiguresAddition and Subtraction with Significant FiguresMultiplying and Dividing with Significant FiguresUnderstanding Square RootsApproximating Square RootsSquare Roots and Real NumbersSimplifying Square Roots

Using polynomial expressions and factoring polynomials.

Addition and Subtraction of PolynomialsSpecial Products of BinomialsPolynomial DivisionFactoring Quadratic ExpressionsFactor by Grouping and Factoring CompletelyFactoring Special ProductsTerms coefficients and exponents in a polynomialSimply a polynomialOpposite of a PolynomialEvaluating a polynomial at a given valuePartial Fraction Expansion 1Partial Fraction Expansion 2Partial Fraction Expansion 3Adding PolynomialsAdding polynomials with multiple variablesPolynomials 2Simplifying First for Subtracting Rational ExpressionsSubtracting Rational ExpressionsSubtracting PolynomialsPolynomials1Subtracting polynomials with multiple variablesAdding and Subtracting Polynomials 1Adding and Subtracting Polynomials 2Adding and Subtracting Polynomials 3Multiplying MonomialsLevel 1 multiplying expressionsDividing MonomialsMultiplying and Dividing Monomials 1Multiplying and Dividing Monomials 2Multiplying and Dividing Monomials 3Multiplying BinomialsSquare a BinomialMultiplying and Simplifying Rational ExpressionsMultiplying Binomials with RadicalsMultiplying Monomials by PolynomialsMultiplying PolynomialsMultiplying Polynomials1Multiplying Polynomials 1Multiplying Polynomials 2Multiplying Polynomials 3Special Polynomials Products 1Multiplication of PolynomialsMore multiplying polynomialsSpecial Products of Polynomials 1Special Products of Polynomials 2Special Products of Polynomials 3Polynomial divided by monomialDividing multivariable polynomial with monomialDividing polynomials 1Algebraic Long DivisionDividing polynomials with remaindersSynthetic DivisionSynthetic Division Example 2Why Synthetic Division Works

Select problems from ck12.org's Algebra 1 FlexBook (Open Source Textbook).

This is a good playlist to review if you want to make sure you have a good understanding of all of the major topics in Algebra I.

Variable ExpressionsOrder of Operations ExamplePatterns and EquationsEquations and InequalitiesDomain and Range of a FunctionFunctions as GraphsWord Problem Solving Plan 1Word Problem Solving StrategiesIntegers and Rational NumbersAddition of Rational NumbersSubraction of Rational NumbersMultiplication of Rational NumbersDistributive Property Example 1Division of Rational NumbersSquare Roots and Real NumbersProblem Solving Word Problems 2One Step EquationsTwo-Step EquationsMulti-Step EquationsEquations with Variables on Both SidesRatio and ProportionScale and Indirect MeasurementPercent ProblemsWord Problem Solving 3The Coordinate PlaneGraphing Using InterceptsGraphs of Linear EquationsSlope and Rate of ChangeGraphs Using Slope-Intercept FormDirect Variation ModelsLinear Function GraphsWord Problem Solving 4Linear Equations in Slope Intercept FormLinear Equations in Point Slope FormLinear Equations in Standard FormEquations of Parallel and Perpendicular LinesFitting a Line to DataPredicting with Linear ModelsUsing a Linear ModelInequalities Using Addition and SubtractionInequalities Using Multiplication and DivisionCompound InequalitiesAbsolute Value EquationsAbsolute Value InequalitiesGraphing InequalitiesSolving Linear Systems by GraphingSolving Linear Systems by SubstitutionSolving Systems of Equations by EliminationSolving Systems of Equations by MultiplicationSpecial Types of Linear SystemsSystems of Linear InequalitiesExponent Properties Involving ProductsExponent Properties Involving QuotientsZero, Negative, and Fractional ExponentsScientific NotationExponential Growth FunctionsExponential Decay FunctionsGeometric Sequences (Introduction)Word Problem Solving- Exponential Growth and DecayAddition and Subtraction of PolynomialsMultiplication of PolynomialsSpecial Products of BinomialsPolynomial Equations in Factored FormFactoring Quadratic ExpressionsFactoring Special ProductsFactor by Grouping and Factoring CompletelyGraphs of Quadratic FunctionsSolving Quadratic Equations by GraphingSolving Quadratic Equations by Square RootsSolving Quadratic Equations by Completing the SquareUsing the Quadratic FormulaProof of Quadratic Formula