数学模拟
13 个交互式数学模拟，从 GCSE 到大学：可以拖动的图像、可以动手的实验，以及背后的数字。
GCSE
A-level
Differentiation from first principles
Shrink h and watch the chord turn
Integration as the area under a curve
More strips, less error. How much less?
Normal and binomial distributions
Shade the area, read the probability
Numerical methods: Newton-Raphson, iteration, bisection
Watch the digits double
大学
系统地学
GCSE Maths 中讲这个主题的课：先看分步讲解，再做考试风格的题目，每次数字都不同。 课程为英文。