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Finland's schools owe their newfound fame primarily to one study: the PISA survey, conducted every three years by the Organization for Economic Co-operation and Development (OECD). The survey compares 15-year-olds in different countries in reading, math, and science. Finland has ranked at or near the top in all three competencies on every survey since 2000, neck and neck with superachievers such as South Korea and Singapore. In the most recent survey in 2009 Finland slipped slightly, with students in Shanghai, China, taking the best scores, but the Finns are still near the very top. Throughout the same period, the PISA performance of the United States has been middling, at best.

Compared with the stereotype of the East Asian model -- long hours of exhaustive cramming and rote memorization -- Finland's success is especially intriguing because Finnish schools assign less homework and engage children in more creative play. All this has led to a continuous stream of foreign delegations making the pilgrimage to Finland to visit schools and talk with the nation's education experts, and constant coverage in the worldwide media marveling at the Finnish miracle.

In many schools in the United States, students struggling the most in mathematics at the start of high school have the worst odds of getting a qualified teacher in the subject, new research finds. Succeeding in freshman-level mathematics is critical for students to stay on track to high school graduation, with students who make poor grades in math in 8th and 9th grades more likely to leave school entirely.

As an introduction to our unit on surface area and volume of solids, my students investigated cross-sections of solids through a Play-Doh Cross Sections lab activity. Materials: play-doh, paper plates, dental floss, plastic knife, and ruler.