[内容取材]本节课取材于《二十一世纪澳门现代数学》,是小学六年级的内容。教学目标有三个:一是巩固正比例的意义;二是能利用影子的长及正比例的关系计算出被测量物体的高度;三是培养学生探索问题的能力及学习的兴趣。在教学中,为了帮助学生认知,还准备了尺子、实物、电筒、多 [Contents] This course is based on the “Modern Mathematics of Macao in the 21st Century” and is the sixth grade of primary school. There are three teaching goals: one is to consolidate the meaning of proportionality; the other is to use the shadow of the long and proportional relationship to calculate the height of the measured object; the third is to develop students' ability to explore problems and interest in learning. In teaching, in order to help students recognize, but also prepared ruler, in-kind, flashlight, and more