Nanotechnology
Fighting Cancer in “Small” Steps
Nanotechnology
is being used to fight cancer on a variety of different levels –
detection, treatment, reduction of side effects of chemotherapy, and,
of course, research into the nature of the disease itself. The
Immunicon company now markets a diagnostic tool, based on magnetic
nanoparticles called ferrofluids, that identifies cancer cells in blood for analysis.
Triton BioSystems uses a magnetic sphere that attaches itself to
certain cancer cells, heating and destroying them. Nanoparticles of
paclitaxel, the active part of the anti-cancer drug Taxol, are being
incorporated by the Accusphere company into a “porous matrix” to
reduce side effects of that drug. Idatech Group is developing an
anti-cancer vaccine that uses gold nanoparticles.
Source:
“Living with Cancer,” Small
Times Magazine - The Business of Micro and Nanotechnology,
September 2005. Vol. 5, No. 6, p. 26.
Nanotech
requires the cooperation of specialists across disciplines –
materials science, chemistry, physics, and bioengineering, to name a
few. Our science curricula should try to reduce artificial
compartmentalization and to give students opportunities to see the
interconnectedness of learning at the highest levels of application.
Check Your Speckle
Laser
speckle is the process by which the nanostructure-level surface
pattern of a material – paper, plastic, packaging – is identified
using laser light reflection. Since all surfaces contain
distinguishing characteristics and minor imperfections, any small area
of a sheet of paper, credit card, or cardboard box has its own unique
speckle “fingerprint.” Those nano-level substructures are not
disrupted by, for example, moisture or rough handling of the surface.
Moreover, the process of laser scanning and comparing one unique
speckle fingerprint against its own image to show an exact match is
both foolproof and inexpensive. Such nanotech identifiers, which are
inexpensive to use and cannot be bypassed, altered, or counterfeited,
may eventually replace “smart tags,” barcodes, molecular markers,
or other authentication devices on product packaging, container
shipments, passports, ID cards, and pharmaceutical containers.
Sources:
“Foolproof ‘Fingerprint’ on Materials Could Aid the Fight
Against Fraud,” Imperial College London, July 27, 2005. www.imperial.ac.uk/P6720.htm
“‘Fingerprinting’
Documents and Packaging,” Nature
Magazine, July 28, 2005. Vol. 436.
Scientists
continue to find never-before-considered applications of nanotech. The
“ah-ha” moment of discovery often comes when technical experts –
like students – operate in Quadrant D of the Rigor/Relevance
Framework, where critical and creative thinking are at their peak.
Information Technology
Top 10 Internet Search Terms
According
to Internet search engine-provider Lycos Inc., the most popular search
term for the past decade was “Pamela Anderson.” The other most
frequently searched for terms were, in order: Dragonball, Pokemon,
Britney Spears, World Wrestling Entertainment, tattoos, Las Vegas, the
NFL, the Sept. 11 attacks, and Christmas. What Lycos calls
"prurient" terms are not listed in their rankings.
Source: Brian
Bergstein (The Associated Press), “’Pamela Anderson’ Top Search
Term,” informationweek.com, Sept. 22, 2005. http://informationweek.com/story/showArticle. jhtml;jsessionid=NOAUCZ4ODYLZMQSND BOCKHSCJUMEKJVN?articleID=171100025
Internet
use should be consistent with the commitment to a safe and orderly
school — one of the International Center’s 10 Key Components of
School Improvement that are a focus of the Successful Practices
Network www.successfulpractices.org.
Twinkle, Twinkle, Little... Oops
On
September 4, NASA’s Swift satellite detected a gamma-ray burst –
the death throes of a giant star as it collapsed into a black hole –
from the farthest reaches of the universe, about 12.6 billion light
years from Earth. This event, the most distant explosion ever
recorded, happened over 12 billion years ago. The burst was observed
from more than twice the distance that some scientists had predicted
was possible and released 300 times more energy than our sun will give
off during its lifetime.
Source:
“Most Distant Explosion Detected, Smashes Previous Record,” NASA,
2005 Press Release.
www.nasa.gov/vision/universe/starsgalaxies/ sburst05_pressrelease.html
Far
too many students struggle with mathematics because they are not
taught meaningful applications of what they are learning. Math is an
enabling skill that empowers learners and opens up many jobs in our
increasingly technology-driven society. By drawing upon engaging
examples from sources such as astronomy and current events, teachers
can help students to gain both the confidence and the competence to
use math to solve “real” problems.
Safety “Net”
During
the recent hurricane disasters along the Gulf coast, the Internet
proved its worth as an emergency-services tool. Existing
community-based local Web sites and a host of other sites sprang into
action by connecting needy survivors with willing individual donors of
emergency supplies and housing, posting lost-and-found and missing
person listings, even providing information on block-by-block
conditions in hard-hit areas. With most cell phones and land-lines
inoperable, e-mail, Instant Messenger, and blogs became the only
available modes of communication for many.
Source: Keith Axline,
“Craigslist versus Katrina,” Wired
News, September 1, 2005. http://wired.com/news/planet/0,2782,68720,00.html
Boy, Do We Feel Dumb!
To
celebrate its 125th anniversary, Science
magazine recently surveyed
more than 100 leading researchers across a host of disciplines to
compile a list of the Top 125 questions still unanswered by science.
The only restriction given was that each question had to have a chance
of being answered in the next 25 years. The list, referred to by the
editors of Science as a “catalogue of bewilderment,” shows the staggering
breadth of scientific inquiry currently underway across the globe.
Included in the list:
·
What is the universe made of? All of the atoms and detectable energy in the universe add up
to less than 5% of what exists. Even by adding in what scientists call
“dark matter”, experts can account for only 30%. What else is out
there?
·
How much can the human life span be extended
? In the 20th century alone, the average U.S. life
span increased from 47 to 77 years, more than 50%. What are the upper
limits of human age?
The full list of questions, with essays on the top 25, is at www.sciencemag.org/sciext/125th/#inscience
Source:
The American Association for the Advancement of Science
Knowing
what you don’t know and having a passion to find the answer is a
sign of an active and willing learner — the kind of students we need
to nurture. As
Ray McNulty
observed at the International Center’s High School Reinvention
Symposium, “Sometimes we don’t just need to think outside the box,
we need an entirely new box to think in.”
Biotechnology
Plants That Clean Up After Plants
Ohio
University's Coal Research Center has a working bioreactor that can
remove carbon dioxide from the emissions of coal-burning power plants.
The elegantly simple biotech system uses the photosynthesis
capabilities of cyanobacteria (blue-green algae). The algae, which are
cultivated in screen-like structures, use water and the CO2
in the exhaust gases to grow new algae. In the process, the plants
give off oxygen and water vapor, but also absorb nitrogen oxide and
sulfur dioxide, both of which cause acid rain if released into the
atmosphere.
Because
the gas emissions are hot, the device uses a type of algae that grows
in the mineral hot springs of Yellowstone National Park. Scientists
chose a naturally existing form of algae rather than creating a
biogenetic strain because, if the bioreactor process proves to be
scaleable, the quantities of mutant algae produced could become a
biohazard. The current prototype can handle 140 m3 of flue
gas per minute, the output of about a three-megawatt power plant or 50
cars.
Source:
Patrick DiJusto, “Blue-Green Acres,” scientificamerican.com,
Aug. 29, 2005.
www.sciam.com/article.cfm?chanID =sa006&colID=5&articleID =00000819-0BA7-1306-8A6883414B7F0000
The
establishment of economical and yet environmentally friendly energy
sources will lie in the hands of a talented pool of future experts –
today’s students – who can solve complex problems across
disciplines, understand data and statistics, and know when (and when
not) to use biogenetically produced solutions.
Education Trends
Special Thoughts on Special Education
The
International Center’s Special Education Institute Executive
Director,
Larry Gloeckler
, challenges his audiences with some keen insights into students with
special needs:
·
Most special education
students today are not significantly cognitively disabled.
·
Students with special
needs make up on average about 12-14% of K-12 student enrollment
nationally, but there are disproportionately high percentages in urban
schools.
·
When people who say they
believe that “all students can learn” have to add “including
special education students,” they don’t yet really believe that
all really means all.
The Public Speaks Out on Education
According
to a recent Educational Testing Service (ETS) poll, only 9% of
Americans think most high school students are being challenged by
their schoolwork. Three-quarters of respondents also said America’s
ability to compete in the world will weaken if, 25 years from now,
high schools have not changed. Additionally, and reflecting national
survey results, respondents felt that:
· Teachers need ongoing
support to be experts in the subjects they teach (74% agree).
· Teacher salaries should
be increased so more well-qualified teachers can be hired and
retained, even if it means increased taxes (80%).
· Schools need to
emphasize real-world learning opportunities in high school through
work study, community service, and career technical courses (64%).
· Students should pass a
state graduation test before they can receive a diploma (80%).
· All students should get
rigorous coursework before graduation, including computer science
(95%), four years of English (85%), three years of history and civics
(81%), four years of mathematics (73%), at least three years of
science (69%), and two years of foreign language (63%).
Source:
Peter D. Hart and David Winston, “Ready
for the Real World? Americans Speak on High School Reform,”
Educational Testing Service, June 2005.
www.ets.org/Media/Education_Topics/pdf/ 2005execsum.pdf
Many
of the sentiments expressed in the poll mirror what the International
Center has been telling educators and their stakeholders since 1991,
especially about the importance of high-quality curriculum and
instruction in support of rigorous and relevant learning.
No Bloke or Sheila Left Behind
Concern
about quality and equality of educational opportunity and academic
rigor is not just a U.S. issue. The Australian federal government has
just announced plans to compare Grade 12 English, math, physics, and
chemistry courses across the various Australian states to determine if
any curricula are being “dumbed down.” Aussie parents and other
stakeholders will be able to compare the quality of curriculum from
state to state. In tandem, the
Federal Education Ministry has proposed a common Grade 12 exit exam
that would credit test-passers with a national Australian Certificate
of Education.
Source:
Samantha Maiden, “States Rated on Year 12 Excellence,” The
Australian, September 24, 2005. www.theaustralian.news.com.au/ common/story_page/ 0,5744,16703273%5E13881,00.html
We
are reminded that our schools compete not only against one another,
but also against increasingly higher global standards for academic
excellence. An emphasis on world-class curriculum and instruction and
ensuring that our students have access to rigorous and relevant
academic coursework are the best investments in guaranteeing
America’s long-term success as a world leader.
Displaced Teachers Connect to Jobs
The
National Science Teachers Association (NSTA) has created a Katrina Job
Bank to help displaced science educators to connect with organizations
that have immediate job openings. This service is free at http://careers.nsta.org/katrina.asp.
Demographic Trends
·
Science and engineering
degrees now make up 60% of the Bachelor’s degrees awarded in China,
compared to 5% of degrees in the U.S.
·
It is estimated that by
2010, 90% of the world’s scientists and engineers will be in Asia.
·
By 2008, the ratio of
new retirees to young people entering the workforce will be 3:1.
The
implications of demographic, globalization, and other mega trends for
education and American society, which Dr. Daggett outlined in his 2005
Model Schools Conference opening address and at the High School
Reinvention Symposium, are staggering. To learn more, order the
75-minute video Preparing Students for Their Future or download the corresponding
white paper at www.leadered.com/
By the Numbers:
The Council of
Chief State School Officers (CCSSO), partner of the International
Center for Leadership in Education on a five-year high school
initiative, has released its 2004 report on Key State Education
Policies. Some highlights from 2004:
·
35 states with policies
on minimum length of a school year require at least 180 days; 6 states
require 175 to 179 days. In 1995, the numbers were 33 and 9,
respectively.
·
34 states require a
minimum of five instructional hours per day for grades 1 through high
school.
·
37 states report at
least one district operating year-round schools, a 28% increase since
1995.
·
42 states require their
districts to operate kindergarten programs, nine of them full-day.
·
38 states require four
or more English credits for graduation; 37 states require two to three
credits in math; 38 require two to three credits in science; and 34
require two to three credits in social studies.
·
17 states require
Algebra 1 and 5 states require a lab science course.
·
33 states require at
least one physical education course.
·
27 states require
students to pass a high school achievement test for graduation.
·
45 states have content
standards in the arts, 36 in foreign languages, 41 in health, 39 in
physical education, and 15 in career and technical education.
·
23 states have no state
policy on classroom instructional materials use or selection.
·
31 states require high
school teachers to have a major in their specialty for certification,
up from 19 in 1995.
·
48 states plus
Washington, D.C. set a minimum number of professional development
hours (most frequently six semester credit hours) for teacher
licensure renewal approximately every five years.
·
All states require
statewide assessments in English language arts and math in 2004. About
two-thirds use criterion-referenced tests.
·
43 states have testing
programs in science in anticipation of a 2008 deadline under NCLB.
Copies of the
entire report are available free at www.ccsso.org/whats_new/press_releases/index.cfm
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