MGTutoring.com. A Rational Perspective on Education.

December 22, 2009

Happy Birthday Puccini!!

Filed under: Uncategorized — Administrator @ 9:29 am

The great operatic composer was born on this day in 1858.

Visit Puccini.com, where you can listen to some of the music he composed, read about his operas, and read about him. (The site does not have the reading material; it links to articles on other sites.)

At Last.fm, they say:

Giacomo Antonio Domenico Michele Secondo Maria Puccini (December 22, 1858 – November 29, 1924) is regarded as one of the great operatic composers of the late 19th and early 20th century. … Known for his melodic ability, orchestra depth, and dramatism, in Italian opera, Puccini was the only true successor to Giuseppe Verdi.

Puccini was born in Lucca, Italy into a family with a long history of music. After the death of his father when he was only five years old, he was sent to study with his uncle Fortunato Magi, who considered him to be a poor and undisciplined student. Later, he took the position of church organist and choir master, but it was not until he saw a performance of Verdi’s Aida that he became inspired to be an opera composer. He and a friend walked an entire 18.5 miles (30 Kilometers) to see the performance in Pisa. In 1880, Puccini travelled to the Conservatory of Music in Milan to begin his career by studying composition with Amilcare Ponchielli.

© 2009 Last.fm Ltd. All rights reserved

On the site about Puccini, Last.fm has some tracks you can listen to as well as some videos you can watch. Enjoy!

Insulin, Obesity, and Exercise

Filed under: Exercise, Health & Nutrition — Administrator @ 9:29 am

We learn a biochemical aspect of something we already knew in “Movement Comes With Appetite” (ScienceDaily, December 21, 2009):

A body that is provided with food too often gets caught up in the maelstrom of a lack of exercise, obesity and ultimately diabetes. The trigger is a molecular switch that is controlled by insulin, a new study by scientists from ETH Zurich has revealed.

If a person or animal ingests food, the beta cells in the pancreas release insulin, which blocks Foxa2. When fasting, there is a lack of insulin and Foxa2 is active. In the brain, the scientists have discovered, Foxa2 assists the formation of two proteins: MCH and orexin. These two brain messenger substances trigger different behavior patterns: the intake of food and spontaneous movement. If mammals are hungry, they are more alert and physically active. In short, they hunt and look for food. “If you watch a cat or a dog before feeding it, you can see this very clearly,” says Stoffel.

Copyright © 1995-2009 ScienceDaily LLC  —  All rights reserved

Interesting.

December 21, 2009

Real Brain Food

Filed under: Education,Exercise, Health & Nutrition — Administrator @ 9:03 am

It’s not sugar that you need to kick-start your brain for a test. What you need are fats like omega-3s and cholesterol.

The article “New Study Links DHA Type of Omega-3 to Better Nervous-System Function” (ScienceDaily, December 19, 2009), says:

The omega-3 essential fatty acids commonly found in fatty fish and algae help animals avoid sensory overload, according to research published by the American Psychological Association. The finding connects low omega-3s to the information-processing problems found in people with schizophrenia; bipolar, obsessive-compulsive, and attention-deficit hyperactivity disorders; Huntington’s disease; and other afflictions of the nervous system.

Copyright © 1995-2009 ScienceDaily LLC  —  All rights reserved.

Read the rest. It has some valuable information in it. (HT: “Omega-3 Fatty Acid And Adiponectin Levels” on Nephropal.)

Your brain needs cholesterol to properly form synapses. In “Learning, Your Memory, and Cholesterol” (cholesterol-and-health.com, July, 2005), Chris Masterjohn writes:

One of the many important roles cholesterol plays in the body is in our nervous system, enabling learning and memory to take place. In fact, one of the reasons that sleep is beneficial to our learning and memory is because it enables our brain to make more cholesterol!

Cholesterol is abundant in the tissue of the brain and nervous system. Myelin, which covers nerve axons to help conduct the electrical impulses that make movement, sensation, thinking, learning, and remembering possible, is over one fifth cholesterol by weight.

Even though the brain only makes up 2% of the body’s weight, it contains 25% of its cholesterol.

One of the groups of genes that the above study found to be upregulated during sleep were genes important for the synthesis and maintenance of myelin, including myelin structural proteins and genes relating to the synthesis and transport of cholesterol.

But the benefits of cholesterol extend beyond both sleep and myelin. In fact, in 2001, cholesterol was found to be the most important factor in the formation of synapses, the basis of our learning and memory.

Read the rest!! It is a very interesting article.

Eating eggs for breakfast — on a proper diet — could help raise your SAT/ACT score, and your GPA.

Statistics and Current Events

Filed under: Mathematics,Science,Statistics — Administrator @ 8:48 am

In “Fables of the Reconstruction (Or, How to Make Your Own Hockey Stick),” the blogger Iowahawk says:

What follows started as a comment I made over at Ace’s last week which he graciously decided to feature on a separate post (thanks Ace). In short, it’s a detailed how-to-guide for replicating the climate reconstruction method used by the so-called “Climategate” scientists. Not a perfect replication, but a pretty faithful facsimile that you can do on your own computer, with some of the same data they used.

A good read. And fun with stats. Check it out.  (HT: Geoffrey K.)

On a related note, read “The ‘Science’ of Global Warming” (Macleans.ca, Thursday, December 3, 2009 10:00am) by Mark Steyn. He writes:

Yet perhaps the most important revelation is not the collusion, the bullying, the politicization and the evidence-planting, but the fact that, even if you wanted to do honest “climate research” at the Climatic Research Unit, the data and the models are now so diseased by the above that they’re all but useless. Let Ian “Harry” Harris, who works in “climate scenario development and data manipulation” at the CRU, sum it up. Mr. Harris was attempting to duplicate previous results—i.e., to duplicate all that science that’s supposedly settled, and the questioning of which consigns you to the Climate Branch of the Flat Earth Society. How hard should it be to confirm settled science? After much cyber-gnashing of teeth, Harry throws in the towel:

“ARGH. Just went back to check on synthetic production. Apparently—I have no memory of this at all—we’re not doing observed rain days! It’s all synthetic from 1990 onwards. So I’m going to need conditionals in the update program to handle that. And separate gridding before 1989. And what [#%] happens to station counts?

“OH [#&] THIS. It’s Sunday evening, I’ve worked all weekend, and just when I thought it was done I’m hitting yet another problem that’s based on the hopeless state of our databases. There is no uniform data integrity, it’s just a catalogue of issues that continues to grow as they’re found.”

You cannot do good statistics with bad data. Nor can you do science.   (HT: Harry B.)

In stats and science, reality must come first.

December 19, 2009

“A Racehorse With Jockey Up” (Oil on canvas, 1855) by Fred Henderson

Filed under: Art — Administrator @ 10:31 am

Henderson_Fred_A_Racehorse_With_Jockey_Up

Image from the Art Renewal Center.

December 18, 2009

What I Already Knew

Filed under: Education,Logic,Science — Administrator @ 12:32 pm

Writing in “Cognitive Scientists Debunk Learning-Style Theories” (Inside School Research Blog on Education Week, December 17, 2009, 9:47 AM), Debra Viaderosays:

Writing in the journal Psychological Science in the Public Interest, cognitive scientists Hal Pashler, Mark McDaniel, Doug Rohrer, and Robert Bjork argue that, of the thousands of articles published on learning styles in recent decades, few really put the theory to an adequate test.

To really determine if a theory is valid, the researchers write, a study would have to first classify students based on the theory being tested and then randomly assign them to one of several different learning methods. Students would also have to be tested before and after the instruction. If the theory is correct, the researchers said, then students would learn best when taught with the teaching methods that mesh with their individual learning styles.

Yet few studies use that or any kind of experimental method to test learning-style theory. And, among those that did, the authors found, several yielded results that contradicted the theory. The authors write:

We conclude therefore, that at present, there is no adequate evidence base to justify incorporating learning-styles assessments into general educational practice.”

That’s not to say learning-style theory would never work, the authors add. Dozens of such theories have been identified and some have never been tested at all.
What many of these theories give a name to may actually be a learning preference. And it’s a long way from preferring to be taught one way to actually learning more when taught by a compatible instructional method.

Besides which, it is we humans who must adjust to the world, to reality and all its modalities: visual, auditory, kinesthetic, etc. — it is not the world which will bend to us. Education is about preparing a child to live independently in the world and amongst other self-sovereign people; it is not about training children to stomp their feet at the world and other people in demand that their “learning styles” be pandered to.

Update (3:30 PM): (1) I should point out that, at this time, I have not yet read the article. (2) I wrote a bit about “learning styles” in my blog post Two Points of Pedagogy.

He Passed!!

Filed under: MGTutoring — Administrator @ 11:51 am

A student I worked with recently ended up passing his college math class. Congrats to him! We started working together a mere two and one-half weeks ago — when he had a low-50s average. Working hard and working diligently, we were able to pull that up to a low-70s. Which grade would have been a little higher if we could have met a few more times to prepare for another quiz and another test he had to take. His effort and success is all the more sterling and solid given that he is having to deal with a hard situation: a family member with cancer. Enough to rack anybody’s mind, heart, and soul. Keep them in your thoughts. They deserve it.

Science is Practical

Filed under: Exercise, Health & Nutrition — Administrator @ 11:27 am

Rob T wrote me, saying: “OK Michael. You got me off sugar and salt. Since I first followed your comments, I shed 12 pounds down to under 180 lbs. Now I work out on a stationary bike rack – holds the TREK in place in front of CNBC, and a Healthrider, minutes per day. Thought you should know. ”

That is great to hear! I’m lovin’ it!  –And what’s more, what he has is healthy weight loss. But he has more than just weight loss; his body composition and function is, as he would find out by measuring parameters of health (blood work, etc.), much improved.

December 16, 2009

Making a Difference

Filed under: MGTutoring — Administrator @ 9:29 am

Me: “Where and how often did you hear about logic, deduction, and induction?”

Student I tutor: “Well, never. Logic was never brought up in any fashion in high school. Never. I had a heart attack when my [college] English teacher said it this year. It was a first ever. No one has ever taught me proper thought process…but thanks to you I’m snapping out of it.”

December 14, 2009

Finals Week Is Busy

Filed under: MGTutoring — Administrator @ 10:38 am

Yesterday. Geez.

I tutored math and more for ten hours; I was gone from home for fourteen: leaving home at 8:30 AM, I didn’t get back until 11 PM.

As it was the day before finals week, Sunday took me from helping someone prepare an essay for English (and a little for history) — focused “brainstorming,” picking a topic to write about, study of detail, induction of general ideas, integration and spiral thinking, writing an outline, developing verbally some ideas for specific sentences; the essay was about a conflict in Of Mice and Men — to tutoring geometry to tutoring algebra to AP calculus to college algebra.

What a joy it is to not give, to not “spoon-feed,” ideas to students, but to teach them to reason and use logic and think independently.

Sweet. Dang, that was fun…  :)

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