ideological and theoretical qualities and practical working ability, and strive to build a contingent of league cadres with positive work style and high quality. Hold a regular meting of the party secretary every fortnightly, arrange the work of the regiment, fedback the student information. Focus on training junior high school, junior high school secretary of the regiment branch to enable them to raise A firm political conviction, diligent and diligent learning spirit and practical and innovative work style.4.2 等可能条件下的概率课题4.2 等可能条件下的概率 目标1．进一步理解等可能事件的意 义，掌握等可能条件下的古典概型的两个基本特征，会把事件分解成等可能的结果（基本事件）；2．通过具体实例学会用列举法（即列表或画树状图）列举出古典类型的随机实验的所有等可能结果（基本事件）并计算一些随机事件发生的概率．重点通过列表、树状图来表示等可能条件下的概率．难点通过列表、树状图来表示等可能条件下的概率教法教学过程备注一、【学前预习反馈】抛掷一枚均匀的硬币 2 次，2 次抛掷的结果都是正面朝上的概率有多大？ 二、【新知探求】1、对抛掷一枚质地均匀的硬币 2 次的试验，我们将第 1 次正面朝上，第 2 次正面朝上，记作（正，正）；第 1 次正面朝上，第 2 次反面朝上， 记作（正，反）；第 1 次反面朝上，第 2 次正面朝上，记作（反，正）；第 1 次反面朝上，第 2 次反面朝上，记作（反，反）．这样，我们可以 利用表格列出所有可能出现的结果：Strengthen the team connection, strengthen the knowledge education among the students (especially the first grade students), and promote the formation of good school spirit with the influence of the league members. All League branches should start with recommending outstanding students as the development objects of the League, take amateur league schools as the basis, conscientiously do a good job in the work of pre-league education, league membership education, League members' vanguard exemplary consci...
