新教材带着很强的趣味性、探索性、开放性、现实性和操作性走进了我们的生活。我们一线教师非常喜欢,主要是它在数学内容的选择与数学知识的呈现方式上灵活多样、图文并茂。很多内容的表述特别贴近学生的生活实际,把枯燥无味的数学知识形象化、生活化。但是在使用过程中,我们还是能发现一些不足。例如在教学“三角形内角和”时,我就有了一个疑问。 The new textbook with a very interesting, exploratory, open, realistic and operational into our lives. Our front-line teachers love it, mainly because of its flexibility and richness in the selection of mathematical contents and the presentation of mathematical knowledge. A lot of content is particularly close to the student’s life reality, the boring mathematical knowledge of visualization, life. But in the process of using, we still can find some deficiencies. For example, teaching “triangle inside and angle”, I have a question.