Applied Math
Interactive math you can see and touch. Drag angles, morph curves, and watch sin, cos, and the rest come alive in your browser.
6 tools
Simulations
- Unit Circle Explorer Drag a point around an interactive unit circle. Watch sin, cos, and tan update live, see the reference triangle, and trace the sine wave in your browser.
- Quadratic Equation Explorer Solve ax² + bx + c = 0 visually. Slide the coefficients or drag the vertex and watch the roots, discriminant, and axis of symmetry update on a live parabola.
- Probability Lab Flip a coin or roll a die thousands of times and watch the empirical frequency converge on the theoretical probability. The law of large numbers, animated.
Calculators
- Combinations & Permutations Calculator Compute nCr and nPr exactly, with or without repetition, with the formula expanded step by step and a plain-language reading of how many ways you can choose.
- Fraction Calculator Add, subtract, multiply, or divide fractions and mixed numbers with every step shown: the LCD, the conversion, and simplifying, plus mixed and decimal forms.
- Prime Factorization Calculator Factor any number into primes with the divisions narrated in exponent form, plus primality, divisor count, and GCF and LCM against an optional second number.