写10 * 1 = 10,10 x 10 = 100,10 x 100 = 1000,1 0 x 1000 = 10000在黑板上。(注意:上面写每个新方程之前,确保将等号对齐)
让学生寻找规律并讨论与合作伙伴。
讨论了作为一个阶级(即模式。,each equation is ten times greater than the one before; each equation has the same number of zeros in the product as in the two factors). Guide the discussion as needed.