In Soviet Russia... No really, I remember learning about things like x + 2 = 5; solve for x in 2nd grade in Soviet Union. After immigrating to US, I recalled t

In Soviet Russia... No really, I remember learning about things like x + 2 = 5; solve for x in 2nd grade in Soviet Union. After immigrating to US, I recalled the level of math education we got in USSR. One teacher remarked that according to the development theories he was taught, it shouldn't even be possible for such young children to grasp such abstract ideas as variables. Good thing nobody told the Russians this fact.