揭示课题要选好时机彭阳县古城乡民族小学王思贤上数学课，一般都是先揭示课题，让学生明确本节课的学习内容，并把学生的注意力集中到学习新知识上来。但有时这样做效果不一定好，换一种揭示课题的方法，选择其他适当的时机揭示课题效果会更好些。如教小学一年级＂得数是... Reveal the topic to choose time When the ancient mathematics class of the ancient urban and rural primary school of Pengyang County Wang Sixian took the mathematics class, generally reveals the topic first, lets the student clarify the study content of this section lesson, and draws the student’s attention to learning the new knowledge. However, sometimes the effect is not necessarily good. To change the method of revealing the topic, it is better to choose other appropriate timing to reveal the topic. If you teach the first grade of elementary school, "the number is...