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在初中化学学习中,化学计算是学生必备的基本技能之一,是定量认识化学的重要基础和化学计算的启蒙学习阶段。培养学生化学计算技能和化学学科科学素养,显得十分重要。解决部分学生化学计算难,我结合新课程标准,在教学中探索方法、技巧,有力地提高了学生化学计算的基本技能。溶液和化学方程式的综合计算新课程标准要求:“学生能根据化学方程式进行简单的计算,能进行溶质质量分数的简单计算”。学生对于单一的计算,
Chemistry in junior high school chemistry learning, chemistry is one of the basic skills necessary for students is an important basis for quantitative understanding of chemistry and chemical calculation of the Enlightenment learning phase. It is very important to develop students’ chemistry calculation skill and chemistry discipline science accomplishment. To solve some of the stoichiometry of students difficult, I combined with the new curriculum standards in teaching to explore methods and techniques, effectively improve the basic skills of students in chemical calculations. Comprehensive Calculation of Solutions and Chemical Equations The new curriculum standard requires: “Students can perform simple calculations based on chemical equations and perform simple calculations of solute mass fractions.” Students for a single calculation,