课堂上以一道两种液体密度题的多解、多变、一变再变为主线,培养学生解题技能和创新思维,学生思维活跃,能从问的方式、待求量与一个已知量互换、题型(填空题、选择题、实验题)、题目呈现方式(图象)、两种液体之间的等量关系等多角度改编,学习兴趣浓,用时两课时。 Classroom with a solution of two kinds of liquid density of multiple solutions, changeable, and then change into the main line, to develop students’ problem-solving skills and innovative thinking, student thinking is active, can ask from the way asked for a quantity and a known amount Interchangeable, question type (fill in the blank, multiple choice questions, experimental questions), the topic presentation (image), the equivalence between the two liquids and other multi-angle adaptation, concentration of learning interest, with two hours.