NEW LESSON LAUNCH
The Cipher Vault
Escape the vault. Master the algorithms. Prove you understood the video.
A computer science lesson told as a thriller
We are excited to announce our newest lesson at NAZLI Tech School! The Cipher Vault turns one of the most important ideas in computer science into a short film. Two people are locked inside an ancient library vault, a clock is ticking, and the only way out is to find one key among 1,000 lockers.
Can you find one key faster than everyone else? One of our heroes tries the obvious way. The other has a much smarter idea. Watch the film to see which approach wins, and why the gap grows so dramatically as the numbers get bigger.
Race the algorithms
One hidden key. Pick how many lockers are in the vault, then press the button and watch linear search and binary search race to find it.
Each strip shows the whole vault. The linear animation is sped up so you do not wait for a million checks.
Watch the short film
Grab your popcorn and watch The Cipher Vault on the official Nazli Tech School YouTube channel. Please like, subscribe and tell us in the comments which method you would have used!
The Cipher Vault: Linear Search vs Binary Search
The companion worksheet
Learning sticks when you do it. So we built a complete classroom pack around the film. Learners watch the story, then prove they understood it by tracing, coding, calculating and evaluating. Here is a peek inside:
Suited to Cambridge IGCSE & A Level, IB Diploma, AP CSP & AP CSA and University CS1/CS2.
Get the worksheet
The Cipher Vault worksheet is now on sale in the Nazli Tech School online stores. Choose your store and download your copy.
Prefer to ask first? Email us at info@nazlitechschool.org or visit www.nazlitechschool.org to explore more lessons.
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