18 MAY 2017 by ideonexus

Emergent Curriculum

Whereas teachers and school boards typically decide in advance what knowledge children should receive based on their age, emergent curriculum is the technique of letting topics for study arise out of student interests and actions. Curriculum becomes what actually happens, rather than what was planned to happen. After all, children design their own “curriculum” all the time, simply by playing in, exploring, and studying the world. In schools inspired by the Italian Reggio-Emilia approach, ...

09 AUG 2014 by ideonexus

12X Spiral

The theory is that numbers are self-organized around the smallest, most highly composite number, 12. The number 12 and many of its multiples (24, 36, 48, 60, etc.) are HCNs: highly composite numbers (with lots of divisors), which are extremely useful for measuring and proportions. Why are there 12 eggs in a carton, 12 inches in a foot, 12 months in a year, 24 hours in a day, 360 degrees in a circle, 60 seconds in minute? Because highly composite numbers can be divided evenly in many ways. For...

Building a spiral around a clock, with 12-segments in the rotation, puts multiples of 3 at {3,6,9,12}, multiples of at {4,8,12}, multiples of 2 at {2,4,6,8,10,12}, and primes at {1,5,7,11}.

21 JUN 2012 by ideonexus

Conception of Time

We never really see time. We see only clocks. If you say this object moves, what you really mean is that this object is here when the hand of your clock is here, and so on. We say we measure time with clocks, but we see only the hands of the clocks, not time itself. And the hands of a clock are a physical variable like any other. So in a sense we cheat because what we really observe are physical variables as a function of other physical variables, but we represent that as if everything is evo...
Folksonomies: time
Folksonomies: time

We do not see time, we only see its effects.

06 JUN 2012 by ideonexus

Humanity is Like an Infant

Taking a very gloomy view of the future of the human race, let us suppose that it can only expect to survive for two thousand millions years longer, a period about equal to the past age of the earth. Then, regarded as a being destined to live for three-score years and ten, humanity although it has been born in a house seventy years old, is itself only three days old. But only in the last few minutes has it become conscious that the whole world does not centre round its cradle and its trapping...
Folksonomies: metaphor perspective
Folksonomies: metaphor perspective
1  notes

In a house 70 years old, but it is only three days old, and starting to see the house around it.

29 MAR 2012 by ideonexus

Why Traveling at the Speed of Light Slows Down Time

the precise time difference between stationary and moving clocks depends on how much farther the sliding clock's photon must travel to complete each round-trip journey This in turn depends on how quickly the sliding clock is moving—from the viewpoint of a stationary observer, the faster the clock is sliding, the farther the photon must travel to the right. We conclude that in comparison to a stationary clock, the rate of ticking of the sliding clock becomes slower and slower as it moves fas...

An elegant explanation in physical terms of photons and the distances they travel.

26 JAN 2012 by ideonexus

The Chemistry of the Nucleus is Just the Metal for the Gears

For it is not cell nuclei, not even individual chromosomes, but certain parts of certain chromosomes from certain cells that must be isolated and collected in enormous quantities for analysis; that would be the precondition for placing the chemist in such a position as would allow him to analyse [the hereditary material] more minutely than [can] the morphologists ... For the morphology of the nucleus has reference at the very least to the gearing of the clock, but at best the chemistry of the...
Folksonomies: biology chemistry
Folksonomies: biology chemistry

It is the chromosomes that are the gears.

01 JAN 2012 by ideonexus

A Clock Stopped at the Moment Feynman's Wife Died

Sometimes we can actually pin down the explanation of a weird coincidence. A great American scientist called Richard Feynman tragically lost his wife to cancer, and the clock in her room stopped at precisely the moment she died. Goose-pimples! But Dr Feynman was not a great scientist for nothing. He worked out the true explanation. The clock was faulty. If you picked it up and tilted it, it tended to stop. When Mrs Feynman died, the nurse needed to record tl the time for the official death ce...

But he traced the phenomenon to a faulty mechanism in the clock that triggered when the nurse picked it up to record the time of death.

08 JUL 2011 by ideonexus

The Baby Naming Explosion

Initially children use just a few names, mostly for familiar things and people. But when they are still just beginning to talk, many babies will suddenly start naming everything and asking for the names of everything they see. In fact, what'sat? is itself often one of the earliest words. An eighteen-monthold baby will go into a triumphant frenzy of pointing and naming: "What'sat! Dog! What'sat! Clock! What'sat juice, spoon. orange, high chair, clock! Clock! Clock!" Often this is the point at ...

When babies start to learn to talk, they embark on a naming-spree where it is easy for a parent to imprint names onto things that the child will remember.