StepWise
100+ data structures and algorithms, every step narrated with its pseudocode line and variables; step back, share as a link, embed in Canvas.
Apps / Cipher Ladder
Cipher Ladder
Climb from Caesar to Vigenère to homophonic ciphers with live cryptanalysis tools.
What it does
A codebreaking course in six rungs, from the Caesar shift up to a homophonic cipher, where each solve unlocks the next. Students work with real cryptanalysis tools: letter and letter-pair frequencies against English, charts that reveal a key's length, and keyboard boards that decrypt live as they guess. Afterward, a built-in solver shows its own step-by-step attack beside the student's path. Teachers build a ladder, set a hint budget, share it as a link, and load students' exported progress into a dashboard of time per rung and hints used.
Good to know
There are no accounts, so progress stays in each student's browser until they export it.
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