晚上帮娃复习代数,发现美国娃学代数太难了,要记住很多词,非常啰嗦。比如简单的polynomial
monomial, binomial, trinomial, ...
然后再
costant, linear, quadratic, cubic, quartic, quintic ...
俺花了两分钟讲了元和次这两个字,娃就能说二元一次,三元五次,一百元一万次,忒容易:))