" With no word from Buenos Aires that it plans to reconsider its decisions, it seems as if, as AFTA noted in a Wall Street Journal ad, "America's teachers have learned a harsh lesson in international economics -- thanks to Argentina's unprecedented debt default.

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One lesson for the teachers: Corporate America is a tougher judge of character than they.

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She said the slowness of the equipment made teachers question if it it is "actually worth planning a lesson and using these kind of facilities due to the extra problems that it will throw up".

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Today, more than half a million teachers in nearly 50 countries use Innovative Teachers Networks to share thousands of lesson plans and innovative digital-classroom resources.

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Yet, with all this high-quality content available to teachers, it is still nearly impossible to find content to use with a particular lesson plan for a particular grade aligned to particular standards.

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At the heart of almost all of these issues is the problem of scale: of finding ways to make high-quality educational resources--whether it's brilliant teachers, innovative lesson plans or inspiring new teaching methods--reach not just a handful of students in a single classroom but hundreds of millions of students around the globe.

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What teachers are being told not to do is to take part in more than three lesson observations a year (where senior or other staff sit in on lessons), attend meetings outside of the normal day, prepare more than one written report to parents and cover for absent colleagues.

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In addition to the information he provides on his site, Keller also supplies toolkits for teachers, complete with lesson plans related to plastic, and is the creator of the Bag Monster, a character that visually represents the plastic bag problem.

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