DEV Math videos


Lesson 1 Lesson 8
Lesson 2 Lesson 9
Lesson 3 Lesson 10
Lesson 4 Lesson 11
Lesson 5 Lesson 12
Lesson 6 Lesson 13
Lesson 7  



Lesson 1  
  Lesson 1a Equivalent fractions lowest terms factors prime numbers prime factoring divisibility rules greatest common factor greatest common divisor GCF GCD undefined fraction proper fraction improper fraction mixed number fraction to decimal decimal equivalent repeating decimal
Lesson 1b Fractions multiplication reciprocal division multiplying dividing
Lesson 1c fractions addition adding subtraction subtracting multiples least common multiple LCM least common denominator LCD equivalent fractions
Lesson 1d Study skills importance of homework
Lesson 2
  Lesson 2a Percents percent conversions
Lesson 2b Word problems pattern for addition pattern for subtraction model for addition model for subtraction pattern for multiplication pattern for division model for multiplication model for division
Lesson 2c Exponents square roots exponential expressions squaring cubing
Lesson 2d Math anxiety study skills
Lesson 3
  Lesson 3a Signed numbers positive numbers negative numbers number sets real numbers rational numbers irrational numbers indefinite numbers integers whole numbers natural numbers counting numbers opposites additive inverses absolute value
Lesson 3b Addition with signed numbers rules for operations adding like signs adding unlike signs 
Lesson 3c subtraction with signed numbers rules for operations subtracting like signs subtracting unlike signs
Lesson 3d Signed numbers fractions decimals
Lesson 3e Study skills organization time management
Lesson 4
  Lesson 4a Signed numbers multiplication rules division rules
Lesson 4b Signed numbers order of operations PEMDAS distributive property
Lesson 4c Translating word phrases into mathematical symbols operational words
Lesson 4d Study skills doing your best on a math test
Lesson 5
  Lesson 5a Introduction to variables algebraic expressions terms factors numerical factors coefficients
Lesson 5b Evaluating expressions
Lesson 5c Polynomials monomial binomial trinomial
Lesson 6
  Lesson 6a Combining like terms adding subtracting variables unlike terms adding subtracting polynomials
Lesson 6b Distrubutive property parentheses
Lesson 6c Greatest common numerical factor
Lesson 7
  Lesson 7a Introduction to equations linear equation solving in one variable inequality solution to an equation
Lesson 7b Concepts in equation solving addition property of equality eliminating a term
Lesson 7c Multiplication division property of equality proportion equal ratios changing coefficient to a 1
Lesson 7d Solving equations with combined properties two step equations
Lesson 8
  Lesson 8a Multiple step equations variable on one side
Lesson 8b Multiple step equations variable on both sides steps for solving linear equations
Lesson 8c Equations strategies decimals and fractions
Lesson 8d Equations solving inequalities inequality addition property for inequalities multiplication division property for inequalities steps for solving inequalities
Lesson 9
  Lesson 9a Equations number problems creating a problem solving algebra word problems
Lesson 9b Consecutive integers consecutive even integers consecutive odd integers consecutive integer patterns
Lesson 10
  Lesson 10a laws of exponents exponents on variables evaluating expressions that contain exponents
Lesson 10b Product rule combining like terms product multiplication rule for exponents multiplying monomials
Lesson 10c Power rule for exponents
Lesson 10d quotient division rule for exponents dividing monomials
Lesson 11
  Lesson 11a Factoring out the greatest common monomial factor
Lesson 11b Multiplying binomials F.O.I.L. foil
Lesson 11c Factoring trinomials steps in factoring
Lesson 11d Rational expressions principle of zero products simplifying algebraic fractions
Lesson 12
  Lesson 12a Geometry geometric figures perimeter formula rectangle square triangle
Lesson 12b Geometry geometric figures circumference circle diameter radius pi
Lesson 12c Geometry geometric figures area
Lesson 13
  Lesson 13a Geometric formulas volume cubic units rectangular box cube cylinder
Lesson 13b Pythagorean theorem right triangle legs hypotenuse