Archives: Bookmarks
Web 2.0 ERC | Simplifying Web 2.0 Education
The Web 2.0ERC European Union funded project is designed to help educators who find ICT confusing to have a simple and secure environment to use ICT in their work and in their classes.
Visualizing Open/Networked Teaching: Revisited « open thinking
Most Important Skills for 21st-Century Students – Sponsored Article – The Atlantic
Doing The Right Thing » assortedstuff
K-12 To See Double-Digit Growth in E-Learning Through 2015 — THE Journal
Spending on e-learning in preK-12 reached $2.2 billion in 2010, according to Ambient Insight. That will hit $4.9 billion in 2015, or 20.25 percent of the entire market for e-learning products and services in the United States (and 9.82 percent of total worldwide annual expenditures).
Brain limits
Information Processing in Human Body
The total information processing activity of the brain is hard to estimate because the current knowledge in this area is fragmentary. However, it is possible to get a general picture of the electronic pulse exchange activity within a couple of orders of magnitude. The activity of the brain is equivalent to that of 1000 kHz processor with 40 Gbits of states. The corresponding processing power (channel capacity) is C=4*1013 bit/s. The minimum necessary power to perform the computations is P=C k T log e, where k is Boltzmann constant and T is the temperature (310 K). So P=1.2*10-7 W. If we assume that brain only needs the energy to perform the computations, the efficiency is about 10-8 of the physical limit.