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植物生理知识是初一植物学教学的难点。为了将抽象的生理知识形象化,启发学生观察植物的生命活动,发展学生的思维能力,笔者从拓宽课外实验和应用电化教学手段两方面进行启发式教学。下面是蒸腾作用的教学实例。一、课外实验在上课前一周,启发学生利用家庭盆栽花卉做蒸腾作用的简易实验,并写观察报告。教材中的演示实验比较复杂,不适合学生课外完成。简易实验方法是:选择一盆阔叶植物的一
Phytophysiology is the difficult point of the first botany teaching. In order to visualize abstract physiological knowledge, inspire students to observe the life activities of plants and develop students’ thinking ability, the author carries out heuristic teaching from the aspects of widening extra-curricular experiments and applying electrified teaching methods. The following is a transpiration of teaching examples. First, the extra-curricular experiment In the week before class, inspire students to use the family potted flowers as a simple experiment of transpiration and write observation report. The demonstration experiment in the teaching material is more complicated and not suitable for the students to complete after class. Simple experimental method is: Choose a basin of broadleaf plants