七年级数学上册-3-1-字母表示数学案苏科版VIP免费

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.3.1 字母表示数合作探究一、探究、猜想与尝试：1、同学们，我们都知道 2024 年奥运会将在我国北京进行，为了迎接 2024 年奥运会,我设想(用投影)以这种形式从左往右搭 2024 个正方形，谁能告诉老师需要多少根火柴棒？……问：(1)搭 1 个正方形需要___根小棒。搭 2 个正方形需要___根小棒。搭 10 个正方形需要___根小棒。搭 2024 个正方形需要__根小棒。(2)搭 n 个正方形需要多少根火柴棒？2、尝试应用用同样大小的小正方形纸片，根据规定的方式拼大正方形。1、根据如此操作：图(4)、(5)、(9)、(10)各有多少个小正方形？2、思考：图(2)比图(1)多几个小正方形？图(3)比图(2)呢？图(4)比图(3)呢？图(5)比图(4)呢？图(10)比图(9)呢？与同学沟通！3、 探究：你认为”每一个图形比它前面的一个图形所多的小正方形个数“有没有规律？有什么规律？如何表示这个规律？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 consciousness education, excellent league members' education, etc. Under the premise of ensuring th...