sustainabilityandspanish's avatarsustainability and spanish

For the first time in history most people on the planet live in urban settings.   There are few places left in the world more than a day’s travel from a city.  The growth of cities, both in population and area, will be a creative challenge for this and future generations.  So it makes sense when covering a unit on “cities” or researching Spanish-speaking countries to engage students in considering what makes a place livable and how to achieve it.

The Green Map system (available in five languages) provides a set of internationally recognized icons to map the places in a city that make it sustainable, inclusive and healthy or that, conversely, detract from these goals.

A few ideas:

Map where you live.  One way to use the Green Map icons is to map the community where you live or even map your school campus.  Students choose the icons…

View original post 579 more words

Posted in Uncategorized | Leave a comment

Arabia Was NOT a Desert Always

Arabia is a vast desert today,but it was not so always.  Satellite images have revealed that a network of ancient rivers once habited Arabian Desert. The images triggered a major potentially ground-breaking research project led by the University of Oxford into human evolutionary heritage. The research team will look at how long-term climate change affected early humans and animals who settled or passed through and what responses determined whether they were able to survive or died out.

In the new project, a multidisciplinary team of researchers will study the effects of environmental change in the Arabian Peninsula over the last two million years. The systematic study of the Pleistocene to Holocene periods will hopefully lead to many breakthroughs.

Researchers will study the landscape features and excavate sites of likely archaeological interest, using the network of water courses as a map. They will use the latest dating techniques to pinpoint the ages of fossils of animals, plants and different stone tool technologies and compare the similarities and differences displayed in the region’s rock art.

The team’s main focus will be the Arabian Desert, but the work will also look into  the history of wider Peninsula. The main question they will attempt to answer is when the first early modern humans are likely to have first arrived in the Arabian Peninsula from Africa and perhaps surrounding regions. They will also look for evidence that suggests how early modern humans were able to survive,  in those arid and extreme conditions.

The project will examine marine cores, caves, existing wide water wells and quarry pits to view the stratigraphy. They will also examine deposits between 30 to 60 metres deep to measure the effects of environmental change, observing any changes from plant fossils and rocks and strata indicating when the climate was wetter or drier.

Once the Arabian peninsula was a  place where rivers flowed and giant prehistoric animals flourished. Among these animals was an ancestor of the elephant — a mammoth creature with four tusks. And in the desert sands of present day Abu Dhabi, Dr Mark Beech found a tusk from one of these ancient animals.

James A. Sauer, former curator of the Harvard Semitic Museum, said  that Pishon (an ancient river mentioned in the Bible)referred to what is now the Wadi Bisha, a dry channel which begins in the Hijaz Mountains near Medina to run northeast to Kuwait.  With the aid of satellite photos, Farouk El-Baz of Boston University traced the dry channel from Kuwait up the Wadi Al-Batin and the Wadi Al-Rummah system originating near Medina.

Links and Sources:

Main Source:Oxford Website, ENN

Posted in BIODIVERSITY, climate change, Countries, Rivers | Tagged , , | 1 Comment

Why Final Exams Might Be All Wrong?

Guest Post by Florine Church

Eight Reasons

Pretty much anything involving tests will rile up controversy in the education sector, particularly those of the standardized variety. But finals dredge up their own share of criticisms, and for reasons other than “not wanting to take them.” While they remain fully ingrained in the fabric of high schools and colleges, many have noted a trend away from the traditional setup thanks to these valid complaints. What this ultimately means for students and teachers alike is up to time, of course, although the likely scenario will see more of a shift in its structure rather than complete elimination.

Final papers seem to be far more popular anyways

  1. So popular, in fact, that Harvard Faculty of Arts and Sciences consider finals the exceptions rather than the rules these days. In fact, any professor wanting to hold one has to submit a form asking for permission! Most just find the final paper a sufficient rubric for measuring students’ knowledge retention. Adding an exam on top of that just exhausts everyone involved with needless redundancy.
  2. Students who barely show up to class can still pass

    Not all classrooms allow for this unfortunate phenomenon, of course, but the ones that do understandably frustrate students who show up every day and wind up receiving the exact same scores. Final exams who pull their content almost exclusively from textbooks pose the highest risk of rewarding the veritable Punxsutawney Phils on campus, so it isn’t their existence so much as their particular structure which causes problems in this instance. The easiest solution for professors hoping to reward pupils involves adding attendance to part of their grade, and throwing in final questions only covered in lectures and activities.

  3. They aren’t the best gauge of skills

    Probably the biggest complaint launched against final exams involves how they just don’t accurately capture how well students understand the material. Comprehensive tests in particular earn this criticism because topics covered earlier in the semester have already begun fading. A trend at Northern Arizona University saw professors edging more towards testing more throughout the course rather than placing much of the weight on midterms and finals. Practitioners claim this practice serves as a far better tool for truly understanding where students’ unique strengths and weaknesses sit.

  4. Exhaustion

    Both educators and their students find the final examination process – whether studying for or grading – mentally and physically taxing. This especially holds a negative influence over those actually taking the tests themselves, as the exhaustion may very well compromise their scores. Even the most competent, intelligent student flubs a few questions when his and/or her brain focuses more on its desire to rest. Hence the popularity of easing the weight off stressful midterms and finals and spreading the grades out a little thinner across the semester.

  1. Awesome alternatives to tests exist

    Berkeley does a fine job of listing creative projects its professors have used in lieu of offering final exams. When designed right, they still challenge students to cobble together the knowledge gleaned over the entire course of a semester with the same – if not more – accuracy than the typical test. Not every topic necessarily lends itself to a written analysis, so replacing the traditional format has its advantages in labs, public speaking and drama courses, and plenty more.

  2. Teaching vs. Teaching to the exam

    It’s the very same criticism often levied onto standardized tests – teachers (especially those who recycle their finals from semester to semester) often feel tethered to the material. A more organic education experience would hinge more on the syllabus than the analyses, though it makes perfect sense why educators roll with such a time-cutting measure. However, critics of the concept think this strategy curtails classroom discussions that veer off into different, but educationally viable, ideas.

  3. Good students are already going to do well; Bad students are already going to do poorly

    Some schools in Canada have already dismantled their final exam and midterm policies because they see these tests as extraneous. As teacher Cherra-Lynne Olthof points out, by the end of the semester students already possess a pretty clear idea where their grades are headed. To some extent, this might also prove indicative of a self-fulfilling prophecy. Students who already know they’re headed for crummy grades might intentionally perform terribly on their finals, even if they have a chance to redeem themselves through them.

  4. Many consider the content rather “arbitrary”

    “Why do we have to memorize this? We’ll never use it in the real world…” plagues ever so many (if not all) educators at some point in their career. Sometimes, though, the complaints regarding rote learning do come supported by genuinely good points and not just plain whining. Conducting final exams on subjects with little to no bearing on future careers seems pointless to many education professionals, who feel as if stress should lay more with valuable life and job skills, which DO need testing.

also published here

  • Cram. Memorize. Regurgitate. Forget. (everydaysociologyblog.com)
  • Final Exam Time! (msotwboggs.wordpress.com)
  • Teaching load, itemized: part 1 (ilaba.wordpress.com)
  • Excuse for an Absence (the25yearplan.wordpress.com)
  • Possible final exam study session through USTREAM (organicchemistoncall.wordpress.com)
  • How Do We Measure Learning? (bokcenter.harvard.edu)
Posted in Guest Post | Tagged , , , | 3 Comments

New Particle

Large Hadron Collider

Large Hadron Collider (Photo credit: John McNab)

Physicists from the University of Zurich have discovered a previously unknown particle composed of three quarks in the Large Hadron Collider (LHC) particle accelerator. A new baryon could be detected for the first time at the LHC.The baryon family refers to particles that are made up of three quarks. Quarks form a group of six particles that differ in their masses and charges. The two lightest quarks, the  “up” and “down” quarks, form the two atomic components, protons and neutrons. All baryons that are composed of the three lightest quarks (“up,” “down” and “strange” quarks) are known. Only very few baryons with heavy quarks have been observed to date. They can only be generated artificially in particle accelerators as they are heavy and very unstable. read here

Posted in inventions, News | Tagged , , , | 2 Comments