Cryptography is the art or science of writing secret messages. It comes from the Greek words "Kryptos", meaning hidden, and "Graphen", meaning to write. Cryptography is one of the main tools for maintaining the confidentiality of information. Among other things, it is used to secure sensitive messages, online purchases and online identity verification.
The word "mandala" comes from Sanskrit, meaning center or circle. Examples of mandalas abound in nature. Designs may vary, but all mandalas have a center and some form of symmetry, which means balance. Use the Mandala Maker to create your very own kaleidoscope-like design.
Seeing colors and reading words use two different pathways of the brain. What happens when the brain is asked to read the color and see the word? Try this game to discover what happens when we try to "trick" the brain.
MP3s take cyber sounds into the 21st Century! The quality of some digital music is comparable to a CD, and the files are small for easier downloading. Learn what it takes to make your own digital music.
