Industry Makes Pitch That Smartphones Belong in Classroom

Earlier this month I posted an audio recording called, "Verizon Math Fail". The recording features a man debating a team of Verizon customer service representatives about whether $0.002 is equal to 0.002¢. On the tape he lost the battle because NONE of the people at Verizon understood the math.

I read, on his blog, that Verizon later held in-service training to correct the problem.

So, I was astonished when I saw this headline in the NY Times this morning: Industry Makes Pitch That Smartphones Belong in Classrooms. The article begins:

"SAN FRANCISCO — The cellphone industry has a suggestion for improving the math skills of American students: spend more time on cellphones in the classroom."

I have taught in schools for the past 17 years and seen the onset, and accompanying problems, of cell phones in the classroom. Students would much rather be fiddling with cell phones than thinking about math.

Using the internet, calculators, and cell phones to do math is a passive way of learning and doesn't develop brain structure as effectively as learning to make the calculations with a pencil and paper or slide rules.

I am sure that if the Verizon employees had used slide rules in math class, rather than calculators, they would have understood the difference between two-thousandth of a dollar and two-thousandth of a cent.

When a slide rule is the tool, the student must calculate where the decimal point is to be placed. Using the slide rule is, in itself, practice in placing decimals and understanding the size of numbers. The brain develops to understand the task. This doesn't happen when a student uses a calculator.

I wonder if the people who make these decisions think that they could have learned to ride a bicycle by playing a video game of riding a bicycle?

If Verizon (and the rest of the cell phone providers, i.e. 'The Industry') think that Smart Phones are a useful tool to learn math, I suggest they provide them to their employees and let them get started.

The Fresh Air Fund is Looking for Camp Counselors

I received the following message from Sara at the Fresh Air Fund:

"The Fresh Air Fund is now accepting applications for counselors for this coming summer of '09. We hire staff members with a wide range in some pretty amazing fields. We are looking for college-aged men and women who love to work with children. I put together this social media news release which explains it all:

http://freshairfundcounselors.smnr.us/

It would be so helpful if you could post a mention on Math Me Thinks . If you are able to post, please send me the link so I can share it with the team.

We are also always looking for Fresh Air hosts for the summer to open their homes to a child, and any help would be appreciated. Thank you so much and please let me know if you have any questions."

Check our their video.

Another Story Involving Bad Math, Bad Science

I found the article Green Guru in a facebook post. It is from the publication First Things: The Journal of Religion, Culture and Public Life and was posted on February 2, 2009 by Stephen M. Barr.

Mr. Barr claims that,

"...if no one had more than two children, as the green guru would want it, the fertility rate could probably not be gotten above 1.4. In twenty generations the world population would plunge to less than 2 million."

This is 'voodoo math'. The error should be obvious by looking closely at what Barr is claiming. If the growth rate remains positive, then the population grows. When the growth rate declines, population growth slows. A population declines when the growth rate is negative. In other words, there is a big difference between the rate declining and the population declining. (Please comments.)

Mr. Barr should read 'The Population Bomb', 1968, by Dr. Paul Erlich, a Stanford University biologist, and 'The Population Explosion', 1990 by Paul and Anne Erlich. These books explain population growth in a manner that a lay person can understand. The math involved, in understanding population growth, can be understood by the average high school student.



To see how the basics of population growth works, see the illustration above. It is representative of the growth of a fictional family over a 100-year period, following the rule, mentioned by Mr. Barr, that a couple limits itself to begetting 'replacements' and thus has only two children.

The first couple, Andrew and Alana are born in 1900 and have two offspring, Brian and Bertha, around 1925. The family reproduces according the the 2-child rule for the rest of the century. Anyone familiar with rudimentary mathematics, sees the structure of '2 to the nth power' (an exponential function) as the basis for the population growth in this example. Alas, people die. The names in lavender, represent people who have perished.

In this example, there are 23 more people on the planet in the year 2000, compared to 1900. The rate of growth is 23 people per hundred years (0.23% per annum).

To compare the fictitious example to real life examples, we can look to the CIA who keeps statistics on population growth throughout the world. Their definition of Population Growth is as follows:

The average annual percent change in the population, resulting from a surplus (or deficit) of births over deaths and the balance of migrants entering and leaving a country. The rate may be positive or negative. The growth rate is a factor in determining how great a burden would be imposed on a country by the changing needs of its people for infrastructure (e.g., schools, hospitals, housing, roads), resources (e.g., food, water, electricity), and jobs. Rapid population growth can be seen as threatening by neighboring countries.

Referring to the chart below which uses 2008 statistics, we can see that, even accounting for war, the population growth rate in Afganistan is 3 times the rate in the U.S. The growth rate in the Gaza Strip is almost 4 times that of the U.S. The actual rate for the U.S. is almost 4 times the rate of our fictional family. The lowest rate, in this chart, is that of Russia. The growth rate in Russia indicates a population decline, as stated previously.

Mr. Barr states later in his article:

"Judging from remarks that colleagues have made in my presence, there are a remarkably many otherwise intelligent people who agree with the green guru that it is irresponsible to have more than two children, and who pride themselves on having stopped at two, as though they were benefiting society thereby. I suspect that this widespread attitude, based on an elementary mathematical error, may be one reason for the woefully low birthrates in economically advanced countries."

Oh really Mr. Barr! I think you might want to rethink your analysis.

Verizon Math Fail - Why I'm No Longer With Verizon

You really have to see this! I especially love it when the manager explains that her incompetence in math is a 'difference of opinion'.

Update!

The gentleman's response to Verizon.

Obama's Education Promises

Dave Murray, in his blog Head of the Class, urges those of us who are interested in education to keep track of President Obama's campaign promises regarding education.

Mr. Murray has sifted through 510 campaign promises from PolitiFact.com and found 37 that involve education. He has posted them to Head of the Class.

Thank you Mr. Murray.