Changes from readers

Every correction a reader sent that a person checked and that changed a lesson, newest first. The line before and the line after, so you can see exactly what moved. A suggestion that was declined is not listed here; the person who sent it sees its status and the reason on their own record.

Want to be one of these? Read a chapter before it is final, or use “suggest a fix” on any lesson.

  1. math/g10/c1/math-g10-ch01-real-numbers-school-g10-en · 2026-09-22

    Before: each one repeated twice

    After: each one appearing twice as often