MIT grad student David Merrill demos Siftables -- cookie-sized, computerized tiles you can stack and shuffle in your hands. These future-toys can do math, play music, and talk to their friends, too. Is this the next thing in hands-on learning?

This demo, from Pattie Maes' lab at MIT (and spearheaded by her student Pranav Mistry), was the buzz of TED2009. Sixth Sense is a wearable device with a projection screen that paves the way for profound, data-rich interaction with our environment. Imagine Minority Report and then some. (Recorded in February 2009 in Long Beach, California. Duration: 08:42.)

technology continues to roll on and mankind has used it’s ingenuity to come up with a whole new sort of man/machine interface. It is called Gesture. And it is not an acronym, it really does mean interfacing by human gesture. And it is one of the hottest areas of technology just now.