The Double Multiplicative Nature of Fraction or Ratio Equ...

Most real-world numbers aren’t always so nice and neat, with wholenumber multiples. If, say, Plant A grew from 2 to 3 feet, and Plant B grew from 6 to 8 feet, then we would say that Plant A grew 1/2 of its original height, whereas Plant B only grew 1/3 of its original height. Such reasoning exemplifies multiplicative thinking and necessarily involves rational numbers. Consider a final example. If you ask a rising 6th grader to compare 13/15 and 14/ 16, chances are that the student will say...

 Universities Targeting Out-of-State Admissions for Tuitio...

Colorado Mesa University was typical of most public institutions in the fall of 2007, with out-of-state students making up a small number, about 5 percent, of the overall student body. But when the economic downturn hit in the fall of 2008, and state support for higher education began dwindling, Colorado Mesa President Tim Foster knew it was time to shake up the status quo. He decided to aggressively recruit out-of-state students, who pay 50 percent to 60 percent more than do Colorado residen...

 Growing a Forest Rapidly

1. First, you start with soil. We identify what nutrition the soil lacks. 2. Then we identify what species we should be growing in this soil, depending on climate. 3. We then identify locally abundant biomass available in that region to give the soil whatever nourishment it needs. This is typically an agricultural or industrial byproduct — like chicken manure or press mud, a byproduct of sugar production — but it can be almost anything. We’ve made a rule that it must come from...

 The Big and the Little

And Mallow laughed joyously, "You've missed, Sutt, missed as badly as the Commdor himself. You've missed everything, and understood nothing. Look, man, the Empire can replace nothing. The Empire has always been a realm of colossal resources. They've calculated everything in planets, in stellar systems, in whole sectors of the Galaxy. Their generators are gigantic because they thought in gigantic fashion. "But we, – we , our little Foundation, our single world almost with...

 The Moving Goalposts of Success

The absence of disease is not health. Here's how we get to health: We need to reverse the formula for happiness and success. In the last three years, I've traveled to 45 different countries, working with schools and companies in the midst of an economic downturn. And what I found is that most companies and schools follow a formula for success, which is this: If I work harder, I'll be more successful. And if I'm more successful, then I'll be happier. That undergirds most of our parenting style...

 Future Techno-Hero

In IP geek circles, Manfred is legendary; he's the guy who patented the business practice of moving your e-business somewhere with a slack intellectual property regime in order to evade licensing encumbrances. He's the guy who patented using genetic algorithms to patent everything they can permutate from an initial description of a problem domain – not just a better mousetrap, but the set of all possible better mousetraps. Roughly a third of his inventions are legal, a third are illegal, an...

 Did Lower Testosterone Help Civilize Humanity?

A new study appearing Aug. 1 in the journal Current Anthropology finds that human skulls changed in ways that indicate a lowering of testosterone levels at around the same time that culture was blossoming. “The modern human behaviors of technological innovation, making art and rapid cultural exchange probably came at the same time that we developed a more cooperative temperament,” said lead author Robert Cieri, a biology graduate student at the University of Utah who began this work as a...

 Accelerating Knowledge

The rate at which man has been storing up useful knowledge about himself and the universe has been spiraling upward for 10,000 years. The rate took a sharp upward leap with the invention of writing, but even so it remained painfully slow over centuries of time. The next great leap forward in knowledge—acquisition did not occur until the invention of movable type in the fifteenth century by Gutenberg and others. Prior to 1500, by the most optimistic estimates, Europe was producing books at a...

 Disproving Santa Claus with a Back of the Napkin Calculation

There is another approach to the extraterrestrial hypothesis of UFO origins. This assessment depends on a large number of factors about which we know little, and a few about which we know literally nothing. I want to make some crude numerical estimate of the probability that we are frequently visited by extraterrestrial beings. Now, there is a range of hypotheses that can be examined in such a way. Let me give a simple example: Consider the Santa Claus hypothesis, which maintains that, in a ...

 Training Memory in Preschool Children

Psychologists have tested memory performance in people all over the world and found that those who have completed at least a few years of formal education score higher than those from the same culture and economic status who did not attend school; and the more years completed, the better the performance. Where formal schooling especially helps is in learning memory strategies, deliberate tricks like verbal rehearsal, information clustering, and note-taking that children use to make it through...