Useful math resources, all in one place.
Practice a skill, check a formula, or refresh a concept. Everything here is made to be clear enough to use on your own and sturdy enough to return to later.
Calculators & tools
Focused calculators that explain the method and point toward useful practice.
Math calculators and student planning tools
Choose from focused math and grade modes inside one calculator built to teach—not just output an answer.
Practice & study guides
Focused practice for one skill or a complete course organized chapter by chapter.
Step-by-step math guides
Learn common Algebra, Geometry, Precalculus, and Calculus topics with diagrams, multiple examples, mistake checks, and printable practice.
College application, SAT & ACT calendar
Track verified testing dates, financial-aid openings, application checkpoints, and every college-specific deadline with printable and digital downloads.
Magic squares
Arrange the numbers so every row, column, and diagonal balances. Choose your square size and challenge level.
Summer math review packets
Ten complete, printable course reviews with original problems, clear skill sections, and answer keys.
Back-to-school math check-ins
Short prerequisite diagnostics with printable answer keys, section scoring, and an interactive readiness guide.
Halloween math activities and puzzles
Fraction labs, percent simulations, an integer maze, probability, geometry, an algebra escape room, and logic puzzles.
Thanksgiving math activities
Recipe ratios, grocery budgets, percent shopping, rates and graphing, statistics, Algebra systems, and logic puzzles.
Math worksheet library
Browse printable worksheets by course and skill, with previews and complete answer keys.
Full study guides
Learn an entire course through connected explanations, examples, practice, tools, and tests.
Visual math reference library
Polished, printable charts with full-size SVG and PNG downloads.
Unit Circle Chart: Degrees, Radians & Trig Values
A complete unit circle chart with degrees, radians, ordered pairs, and exact sine and cosine values, plus a blank printable practice circle.
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Trigonometric Identities Cheat Sheet
A printable trig identities cheat sheet organized by reciprocal, quotient, Pythagorean, even-odd, cofunction, and double-angle identities.
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Exponent Rules Chart
A printable exponent rules chart with symbolic laws and quick examples for products, quotients, powers, zero, negative, and fractional exponents.
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Parent Functions Chart
A printable parent functions chart with graphs, equations, domains, ranges, and identifying features for nine essential function families.
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Quadratic Formula Guide
A printable quadratic formula guide explaining coefficients, the discriminant, solution types, and a complete worked example.
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Special Right Triangles Chart
A printable special right triangles chart with 45-45-90 and 30-60-90 diagrams, side ratios, and missing-side examples.
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Geometry Formulas Cheat Sheet
A printable geometry formulas cheat sheet for area, circumference, surface area, and volume with labeled two- and three-dimensional figures.
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Common Derivatives Chart
A printable derivative rules chart with constant, power, product, quotient, chain, exponential, logarithmic, and trigonometric derivatives.
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Common Integrals Chart
A printable common integrals chart focused on Calculus I antiderivatives, including the power rule, 1/x, eˣ, basic trig integrals, constant multiples, sums, and +C.
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Factoring Patterns Cheat Sheet
A printable factoring patterns cheat sheet covering greatest common factors, difference of squares, perfect-square trinomials, general trinomials, and cubes.
Open reference and downloads →Reference tools
Quick guides and interactive references for concepts worth understanding clearly.
Common antiderivatives
The antiderivatives, substitution patterns, and integration rules students commonly memorize.
Open the guideCommon derivatives
The derivative rules and function formulas calculus students are typically expected to memorize.
Open the guideSeries convergence tests
A decision-focused guide to geometric, comparison, integral, alternating, ratio, and root tests.
Open the guideCommon trig identities
Reciprocal, quotient, Pythagorean, angle, and product identities in one clean guide.
Open the guideUnit circle practice
An interactive tool for learning angles, coordinates, and exact trig values.
Start practicingTrig graph transformations
Change amplitude, period, phase shift, and midline while the graph responds live.
Open the labMatrix RREF calculator
Build matrices up to 10 × 10, row-reduce with exact fractions, and review every elementary row operation.
Open the workspaceGPA calculator
Add classes with individual weights and letter grades, then review the weighted GPA calculation step by step.
Calculate GPA