二年级数学下册 信息窗1 去姥姥家1教案 青岛版（The second grade math book information window 1 to the grandmother 1 plan Qingdao version）.docVIP

二年级数学下册 信息窗1 去姥姥家1教案 青岛版（The second grade math book information window 1 to the grandmother 1 plan Qingdao version） 1: the information window to the grandmother of 1 The teaching process [] Activities: situational interest lead-in 1, talk: little friends, do you remember what we have learned even adding or subtracting, mixed addition and subtraction operations order? (parity talk) 2, today we are going to carry out a calculation of small game master, please? Who can pass smoothly, who became a small calculation expert in our class, you have confidence? Design intent: through conversation, arouse the students interest to participate in the competition. ] Two activities: activities to solve the problem (a) first off: pick the fruit of wisdom 1, there was a talk: Wisdom Tree teacher hands, above filled with the fruit of wisdom, there are 4 questions below the fruit of wisdom (paste on the blackboard) 288+139+547 604-417+135 502-136-78 234+157-126 (1) and calculated the students finish. (2) the answer. The teacher said the students who raised early formula, who spoke the results, you will automatically pick up a tree corresponding to the fruit of wisdom. 2, the team announced the answer. (two) second: market survey 1, see talk: kids play so well, especially happy grandpa. He said, now the weather is hot, we go to the mall to see the sales of air conditioning, you want to go? 2, click on the courseware, show a bar chart. Grandpa said, I have 4 questions, if you have the answer, and Ill take you home to visit Xiaoqiang brother study. (1) () month of sales (most) month of sales at least. (2) three months before the total sales amount of Taiwan? (3) July sales in May June, more than the sum of the number of units? (4) you can put what problem? The students independently, team communication. (three) Third: visit the library 1, show the bookcase, guide the students to carefully observe the content on the screen. Ask questions: (1) what did you find? (2) do you know the story