FreeRice – donate food with your vocabulary skills

The UN World Food Program (WFP) has the site FreeRice.com where for each vocabulary question you answer correctly it donates 10 grains of rice to the WFP. The site is quite ingenious, it uses the money generated by the banner adds at the bottom of the page to buy the rice. It was created by … Continue reading “FreeRice – donate food with your vocabulary skills”

Classroom Activities in Economics: Resource Guide Plus

I’ve had a number of posts based on stuff I learned this summer at the Fed. Most of it has been about the resources and tools they have available on their website and it can be a little intimidating trying to figure out how to actually use all of this data. So the Fed has … Continue reading “Classroom Activities in Economics: Resource Guide Plus”

Dealing with test anxiety

In the middle school our students have to take tests. While it’s not quite as bad as the Afghan college entrance exam, there’s the annual standardized test, and then there are the cycle tests every six weeks. Even with the cycle tests, some students have test anxiety. They see a math test with almost identical … Continue reading “Dealing with test anxiety”

Quantum mechanics – things you should know

The way sub-atomic particles behave is weird. They don’t fit very well into our everyday experience of the world, but the math and the experimental observations hold up. Chad Orzel has an interesting post on the seven things everyone should know about quantum physics that’s written in language a lay person can understand. This does … Continue reading “Quantum mechanics – things you should know”

Geometry and the height of the mountains on the moon

Galileo Galilei matched careful observation of sunlight and shadows on the moon, with some beautiful geometry to estimate the height of lunar mountains, in 1609. He needed the Pythagoras’ Theorem and the quadratic formula, both of which middle school students should be familiar. Larry Phillips has a nice post describing how Galileo did the math. … Continue reading “Geometry and the height of the mountains on the moon”