These presentations are composed of demonstrations of the website http://demonstrations.wolfram.com/. They are adapted for Russian-speaking junior school students.
What child does not like to play cubes? Offer him to play with the "Cubiki.cdf".
Electronic models of watches are presented in the file "Time.cdf".
The author of the file"Mult.cdf" not only translated English into Russian, but also changed a way of multiplying a double-digit number by a single-digit number.
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