Posts By Me

Measuring Teacher Effectiveness. I have a new paper on teacher effectiveness out today. So far as I know, it's the first ‘value-added’ study to be conducted outside the United States. Estimating Teacher Effectiveness From Two-Year Changes in Students Test Scores Using a dataset covering over 10,000 Australian primary school teachers and over 90,000 pupils, I estimate how effective teachers are…

Rising Water Effects for NYC in Google Earth - Part II. Back in early April I shared some fun stuff a GEC member called 'Bzoltan' did which shows the effects resulting if the seas rose from 1 to up to 100 meters. I say "fun" because 100 meters is a very unlikely thing to happen, but there is certainly a…

Disney Cartoon Mashup Explains Copyright Law. A Stanford University documentary film project, A Fair(y) Use Tale, weaves snippets of classic animated films into a short short in which Disney characters explain the basics of fair use and argue against longer copyrights. [Wired Top Stories]

Southern Ocean Carbon Sink Weakened. An international research team has found that the Southern Ocean's ability to absorb carbon dioxide has been reduced by around 35 percent since 1981. [ScienceDaily Headlines]

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