Move a number.动一下数字。
Then see what the chart still lets you say.再看这张图还允许你说什么。

Methods Explorer is a set of short exercises. Each page is one decision and one chart. Move a slider, and the sentence under the chart says what changed.方法探索是几页短练习。每一页只做一件决定，配一张图。你拖动滑块，图下面那句话会告诉你变了什么。

Each page is built to catch one mistake: reading the chart as if the decision were already made. A pay gap can be family savings, not the subsidy. A workshop can look helpful because the stronger students signed up. News that an elective still has seats can fill one faculty and never reach the other. A curve can sit on this year’s 24 districts and miss next year’s.每一页要拦住同一种错：把图当成决定已经做完。工资差距可以来自家里的积蓄，不一定是补贴。工作坊可以看起来有用，只因为数学更好的同学报了名。选修课还有名额的消息，可以传遍一个学院，另一个学院谁也不知道。一条曲线可以贴住今年的 24 个区，明年却对不上。

Short paths短路径

A path opens the exercises in a set order, with the sliders already placed.一条路径按固定顺序打开几页练习，滑块已经放好。

Move a number.动一下数字。Then see what the chart still lets you say.再看这张图还允许你说什么。

Short paths短路径

Move a number.动一下数字。
Then see what the chart still lets you say.再看这张图还允许你说什么。