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Valentine's Cardioid
WojciechSwiderski at the Polish language Wikipedia Happy Valentine's Day! This PDF contains four ways students can draw cardioids for Valentine's Day. There is no solution for this activity...
Geometry
Holidays and Annual Events
Grades 6–HS
The Euro and the international debt crisis
Lately the news is filled with talk of the Euro, US foreign debt, the fragility of European monetary systems, and the interdependence of all of these crisis. In...
Algebra
Number Sense
Grades 5–6
Launch of the next ISS crew
If all goes well, the next crew of the International Space Station (the ISS) will launch on Sunday, Novemeber 13, 2011 from the Baikonur Cosmodrome in Kazakhstan. Keep...
Number Sense
Math and Science
Grades 3–5