sashura: (Default)
sashura ([personal profile] sashura) wrote2012-10-03 11:50 am

Virtual Math Manipulative Website

куча интерактивных математических штук
http://nlvm.usu.edu/

Мне нравятся их весы для уравнений:
http://nlvm.usu.edu/en/nav/frames_asid_201_g_3_t_2.html?open=instructions&from=topic_t_2.html
особенно вариант с шариками для отрицательных чисел:
http://nlvm.usu.edu/en/nav/frames_asid_324_g_3_t_2.html?open=instructions&from=topic_t_2.html

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