六年制小学数学第十册课本第七十九页最后一段,概括的分数化有限小数规律中的“2和5”应改为2或5,否则,犯了联言和选言相混的逻辑错误。同时,给教师的教学带来困难,也使学生产生错觉。 In the last paragraph of the seventy-ninth page of the six-year primary school mathematics textbook tenth, “2 and 5” in the generalized fractional law should be changed to 2 or 5. Otherwise, the conjunction and election statement are mixed logical error. At the same time, the teaching of teachers to bring difficulties, but also make students illusion.