Bret Victor - Inventing on Principle on Vimeo
purpose living life insight doing self-discovery experience modelessness causes craftsman problemsolving meaning meaningmaking specialization skills identity rightandwrong ideals richardstallman piaget jeromebruner alankay dougengelbart xeroxparc terrycavanagh larrytesler activism injustice justice morality responsibility animation mediaconnection teletype computing history analogdesign electronics comparisons data space understanding search visualization time braid making ideas programming 2012 connection discovery coding invention creativity principles bretvictor from delicious
february 2012 by robertogreco
purpose living life insight doing self-discovery experience modelessness causes craftsman problemsolving meaning meaningmaking specialization skills identity rightandwrong ideals richardstallman piaget jeromebruner alankay dougengelbart xeroxparc terrycavanagh larrytesler activism injustice justice morality responsibility animation mediaconnection teletype computing history analogdesign electronics comparisons data space understanding search visualization time braid making ideas programming 2012 connection discovery coding invention creativity principles bretvictor from delicious
february 2012 by robertogreco
Be wary of test score comparisons | ajc.com
november 2010 by robertogreco
"The first question that should raise eyebrows is who takes the tests. The TIMSS, for example, tests students who are in their “final year of school.” But the ages of students range from 17 in the U.S. to 21 in other countries…<br />
<br />
Then there is the matter of selecting which students from these age groups actually sit down for the test. The U.S. engages in actual sampling, while other countries are highly selective. Russia and Israel, for example, administer TIMSS to native speakers only. Switzerland gives the test to students in only 15 of the highest performing regions of the country.<br />
<br />
Moreover, little attention has been paid to how the tests are constructed. Items that appear on the test are negotiated by the participating countries. It comes as no surprise, therefore, that countries push hard for items that will mesh closely with their curricula in order to look good in the rankings.<br />
<br />
Finally, there is the role that poverty plays in the results."
pisa
timss
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from delicious
<br />
Then there is the matter of selecting which students from these age groups actually sit down for the test. The U.S. engages in actual sampling, while other countries are highly selective. Russia and Israel, for example, administer TIMSS to native speakers only. Switzerland gives the test to students in only 15 of the highest performing regions of the country.<br />
<br />
Moreover, little attention has been paid to how the tests are constructed. Items that appear on the test are negotiated by the participating countries. It comes as no surprise, therefore, that countries push hard for items that will mesh closely with their curricula in order to look good in the rankings.<br />
<br />
Finally, there is the role that poverty plays in the results."
november 2010 by robertogreco
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