Students read code before they write it.
For high school and intro college CS. Students predict what a program prints, rebuild it from scrambled lines, then write their own, all inside your lesson and checked automatically.
Try what your students would do.
Start with a loop. Students predict what it prints, put the program back in order, then write their own version that’s tested against the output you expect.
See all course toolsThe tools you’d use.
Code tracing
Students predict the output and each variable’s final value before they run anything, so misconceptions show up early.
Interactive lessons
Add Parsons problems right after your explanation, with distractor lines and indentation if you want them.
Code exercises
Give students starter files and check their programs against the input and output you expect.
Cloud-based labs
For bigger projects with more than one file. Students get VS Code in the browser and can run a real backend, even on a Chromebook, with nothing to install.
AI tutor
It stays off until you turn it on for a lesson. You choose how much help it gives, and you can read every conversation.