Lesson 3 · A check for each step · step 11 of 1101Read02End each step with a pass or a fail03Task 104Task 205Say what a pass looks like06Task 307Read the output before the next step08Task 409Task 510Recap11TakeawayTakeawayStep-check worksheetLog in to read this lesson. A free account opens the introductory chapter.←RecapWhy you show the slice to real people, measure one number, and decide before you look→