【教学内容】人教版一年级下册第34、35页。【教前思考】《100以内数的认识》在整个数概念的学习体系中具有比较重要的地位,它既是20以内数的认识延续,又是进一步学习1000以内乃至更大的数认识的基础。一年级的学生在入学前就已基本会数100以内的数,大部分学生会读、会写,但我们认为他们对数的组成和顺序的认识主要停留在形式化阶段,表 【Teaching content】 PEP 1 grade Volume 34, 35 pages. “Pre-praying thinking” The “knowledge of the number 100” plays an important role in the learning system of the whole number concept. It is not only the continuation of knowledge within the number of 20 but also the basis for learning more about the number 1000 and beyond. The first grade students have basically counted within 100 before the admission. Most students will read and write, but we think their understanding of the composition and order of the logarithm mainly stays in the formal stage.