CodeFlip
Docs
Open the visualizer
Flip through code, one line at a time.
Press Next and see what each line changes in memory, with every step explained in plain English.
Free, nothing to install, and nobody needs an account.
For students
Stop guessing what your code does. Watch each line change your variables, step back when something surprises you, and read a plain sentence that explains every step.
For teachers
Show the class what the computer is doing instead of drawing it on the board. Step through a program together, then give students the same link to explore on their own.
Use it with your class
Free for any class, school or textbook.
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Embed on a website
Copy the embed code from Share and paste it into Google Sites or your class page.
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Add it to Canvas
Add programs to modules and assignments, and students open them inside Canvas.
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Control what students see
Stop on the lines that matter, hide variables, and give the program its input.
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Build it into course materials
Writing a textbook or a course site? Put programs students can step through right in your pages.