Two points. One line. Endless puzzles.
Learn the coordinate plane one step at a time. Plot points, draw the line through them, measure its slope, write its equation, and find where two lines cross. Every answer explains itself. Missed questions come back until they stick.
Your path
Reach the 80% line in a step, then move on.Progress is saved in this browser only. Made for grades 6–8: steps 1–2 fit grade 6; slope, equations and crossing lines stretch into grades 7–8.
Keys: 1–4 to answer, Enter for next.
Fresh numbers every time. Scrap paper helps. Keys: 1–4, Enter.
Challenge
A quiz with no hints and no answers until the end. Earn up to three stars: ★ 50%, ★★ 75%, ★★★ 90%.
Past challenges
Plane Lab
Drag the four dots. A and B make the red line. C and D make the blue line. Everything on the right updates as you go.