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Math
Algebra
Introduction to algebra
Overview and history of algebra
Linear equations
Converting repeating decimals to fractions
Ratios and proportions
Systems of equations and inequalities
Solving systems with elimination (addition-elimination)
Solving systems with substitution
Super fast systems of equations
Thinking about solutions to systems
Arithmetic
Arithmetic and pre-algebra
Addition and subtraction
Intro to addition and subtraction
Fractions
Adding and subtracting fractions with unlike denominators
Adding and subtracting mixed number with unlike denominators
Mixed number addition and subtraction
Mixed number multiplication and division
Calculus
Indefinite and definite integrals
Indefinite integral as anti-derivative
Riemann sums and definite integration
U-substitution
Early math
Counting
Counting small numbers
Geometry
Points, lines, and planes
Introduction to Euclidean geometry
Probability and statistics
Independent and dependent events
Basic probability
Dependent probability
Partner Content
MIT+K12
Physics
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  • Subtracting mixed numbers: 7 6/9 - 3 2/5

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  • Subtracting fractions with unlike denominators

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  • Subtracting mixed numbers with regrouping (unlike denominators)

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  • Adding mixed numbers with regrouping

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  • Adding fractions with unlike denominators

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  • Counting in order

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  • Finding probablity example 2

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  • Finding probablity example

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  • Describing subsets of sample spaces exercise

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    786
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  • Finding probablity example 3

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    774
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  • Analyzing event probability for independence

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    862
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  • Counting with small numbers

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    840
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  • Systems with Elimination Practice

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  • Simple Elimination Practice

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    1588
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  • Example 3: Solving systems by elimination

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    1471
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  • Addition Elimination Method 4

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    1625
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  • Addition Elimination Method 3

    Khan Academy
    1476
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  • Addition Elimination Method 2

    Khan Academy
    1632
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  • Addition Elimination Method 1

    Khan Academy
    1428
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