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目标:一、会区分、形成不同集合,感知集合的元素、子集以及集合的交集、差集。二、培养动手能力、观察能力,进行学数前期思维训练,感知数学美。准备:一、实物材料:凹凸多用盘一只,凹面为第一直角坐标系状,有0～10数字和10×10个小方格,凸面有10×10个小凸钉;彩色小方块、图形片若干,红色回形针、橡皮筋各一。二、底板图两张,(见彩图1、彩图2)摆放实物材料用。(材料可选自《儿童数形宝盒》或自行收集和仿制)
Aims: First, we will distinguish between the formation of different sets, perception of the elements of the collection, subset and set of intersection, difference set. Second, cultivate practical ability, observation ability, pre-school thinking training, perceived mathematical beauty. Preparation: First, the physical material: a concave multi-purpose disk, the concave rectangular coordinates for the first system, there are 0 to 10 numbers and 10 × 10 small squares, convex surface with 10 × 10 small nails; small color box, A number of graphics, red paper clips, rubber bands one each. Second, the floor plan two, (see color map 1, color map 2) Use of physical materials. (Material can be selected from “Digital Shaped Box” or collected and imitated by yourself)