K–12 curriculum

Every grade, every subject, one map.

277 units, 1456 lessons, and 2170 practice questions across Math, Science, and English — K–12, sourced from Khan Academy, NGSS, and Common Core. Pick a subject, then a grade.

14 lessons · 52 items · 26 questions
Counting and place value · Addition and subtraction · Measurement and geometry
17 lessons · 60 items · 28 questions
Place value · Addition and subtraction · Measurement, data, and geometry
32 lessons · 169 items · 70 questions
Add and subtract within 20 · Place value · Add and subtract within 100 · Add and subtract within 1,000 · …
65 lessons · 286 items · 131 questions
Intro to multiplication · 1-digit multiplication · Addition, subtraction, and estimation · Intro to division · …
75 lessons · 377 items · 148 questions
Place value · Addition, subtraction, and estimation · Multiply by 1-digit numbers · Multiply by 2-digit numbers · …
64 lessons · 326 items · 127 questions
Decimal place value · Add decimals · Subtract decimals · Add and subtract fractions · …
78 lessons · 357 items · 106 questions
Ratios, rates, & percentages · Arithmetic operations · Negative numbers · Properties of numbers · …
50 lessons · 287 items · 90 questions
Negative numbers: addition and subtraction · Negative numbers: multiplication and division · Fractions, decimals, & percentages · Rates & proportional relationships · …
52 lessons · 354 items · 100 questions
Numbers and operations · Solving equations with one unknown · Linear equations and functions · Systems of equations · …
94 lessons · 543 items · 140 questions
Algebra foundations · Solving equations & inequalities · Working with units · Linear equations & graphs · …
61 lessons · 324 items · 69 questions
Performing transformations · Transformation properties and proofs · Congruence · Similarity · …
69 lessons · 333 items · 95 questions
Polynomial arithmetic · Complex numbers · Polynomial factorization · Polynomial division · …
89 lessons · 442 items · 110 questions
Complex numbers · Polynomials · Composite functions · Trigonometry · …
97 lessons · 527 items · 109 questions
Limits and continuity · Differentiation: definition and basic derivative rules · Differentiation: composite, implicit, and inverse functions · Contextual applications of differentiation · …
Turn any lesson into a game