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探究性学习是培养学生创新能力的一种有效学习模式.现以三角形三边关系定理的探究为例说明如下.准备:事先准备好长度分别为4cm、5cm、6cm、10cm、11cm、12cm的6根小木棒.操作1:任取3根小木棒将其首尾相接,拼成三角形,并记录下来3根小木棒的长度.探索1:任意3根小木棒能否拼成一个三角形?探索2:有几组3根小木棒能拼成一个三角形?探索3:有几组3根小木棒不能拼成一个三角形?探索2结果(共12组).
Exploratory learning is an effective learning model for cultivating students’ innovative abilities. The following is an example of the exploration of the triangular trilateral relation theorem. The preparations are as follows: 6 in lengths of 4cm, 5cm, 6cm, 10cm, 11cm and 12cm are prepared in advance. Small wooden stick. Operation 1: Take three small wooden sticks to connect them end to end, make a triangle, and record the length of three small wooden sticks. Explore 1: Any three small wooden sticks can be made into a triangle? Explore 2 : How many groups of 3 wooden sticks can be combined into a triangle? Exploration 3: There are several groups of 3 wooden sticks that cannot be combined into a triangle. Explore 2 results (12 groups in total).