SciShow Kids
4 Amazing Science Experiments for a Day Inside | Compilation | SciShow Kids
Squeaks is very bored, so he shows Mister Brown some of his favorite rainy day experiments!
Curated Video
How to Make Simple a Secret Decoder
People have been using codes throughout history to keep their messages private and my two little spies needed a way to sent their secret messages to each other too. So I came up with this simple paper plate decoder for them to have fun.
Curated Video
How to Make a Note for Valentine's Day
Whether you're crafting a note for a friend, a family member or a loved one, here is a smart way to make an unfolding message card.
Great Big Story
This Uncrackable Code Is Puzzling the CIA
Delve into the enigma of Kryptos, a mysterious sculpture at the heart of the CIA headquarters, challenging code-breakers for three decades. Meet Elonka Dunin, a puzzle enthusiast, and artist Jim Sanborn, the creator of Kryptos, as they...
Archaia Historia
How did Ancient Greeks send Secret Messages?
In the art of espionage, subterfuge and military matters the necessity of secrecy is paramount. In the modern day most of our messages are encrypted and sent discreetly and instantly across the world. Of course, the ancients didn’t have...
Massachusetts Institute of Technology
Mit: Blossoms: Fabulous Building Cryptosystems
As part of this introduction to cryptography, students will build three devices and learn how to encrypt and decrypt messages. Video is accompanied by a teacher's guide, transcript, and other handouts, as well as links for learning more...
National Science Foundation
National Science Foundation: Secret Writing
A demonstration of how to write a reversible secret message using goldenrod colored paper, a candle, and ammonia-based window cleaner. [1:58]