课堂教学蕴含着巨大的活力，只有师生的生命活力在课堂教学中得到有效发挥，才能真正有助于新人的培养和教师的成长。在小学数学课堂教学中，应通过置悬诱趣、设疑引议、以用促练等途径来实现激活主体，焕发数学课堂活力。一、置悬诱趣，让导入“活”起来布鲁纳说过：“学习最 Classroom teaching contains a huge vitality, and only the vitality of teachers and students in the classroom teaching to be effective in order to really help newcomers and teachers grow. In primary school mathematics classroom teaching, we should activate the main body through the methods of setting off suspense, setting suspicion and quoting, and promoting the vitality of mathematics classroom by means of promoting training. First, hanging lure, let into the “living” Bruna said: "The most learning