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Math lesson plans - the volume of cuboid and the cube
Teaching Objectives 1. Understand and cuboid and the cube size is calculated. 2. Able to use a long, calculating the volume of the cube to solve some simple practical. 3. Students satisfied reasoning, abstraction ability. Teaching focus cuboid and the cube size is calculated. Teaching difficult cuboid and the cube formula of the volume. Teaching aids and teaching aids: 1 cubic centimeter cube 24, 1 cubic decimeter cubic one. Learning Tools: 1 cc cube 20. Teaching process () one. 1. Question: What is the volume? 2. Ask each student come up with four 1 cubic centimeter cubes,Beats By Dre Headphones, put them to fight together,herve leger sale, placed in a row. Teacher questions: What makes up a body? (Rectangular) is the volume of this rectangular number? (4 cc) How do you know? (This box consists of four 1 cm 3 cube makes up) and then fight a 1 cubic centimeter cube on it? (5 cm3) conversation cited: the volume of an object to be measured, depends on the object containing the number of volume units. Today we learn how to calculate the cuboid and the cube size. Blackboard issue: volume two of cuboid and the cube, learning a new lesson. (A) the volume of rectangular [animation Fight swing rectangular: ask someone for a group of four, with 12 small rectangular cube to put to fight, and were put down the box's length, width and height. 2. Students reported the teacher writing on the blackboard: Teacher questions: The cuboid have in common? (Volume equivalent) difference? (Different data) Why different volume equal to it? (They all contain the same amount of volume of units - 12 one cubic centimeter) teachers guide: Please observe the rectangular put his long, wide, high number, in addition expressed the cuboid length, width, length of high, but also What does that mean? Teachers and students to accept: that long number, for example 4, except that 4 cm long, but also expressed a row put the four 1 cubic centimeter cube. By the same token, also said that a wide number of put a few rows that have a high number of said layers. 3. [Animation Put a row of four 1 cc total cube → put → put three rows of two Group II: above requirements put 3 cm long, 3 cm wide, 2 cm high rectangular. Put a row of three 1 cc of a cube placed a total of three rows → → Layer 2 third place: imagine a length of 5 cm wide and 4 cm, height 3 cm rectangular, to say the volume. Put a row of five total 1m3 cube → put → put 4 rows of 2-layer thinking: Please observe these data derived from the practice, put into a fight with the graphics, look at these figures and the volume of cuboid There is no relationship? What is the relationship? (Rectangular volume just its length, width and height of product) teacher writing on the blackboard: the volume of cuboid = length × width × height Teacher: The V is volume, a said long, b said width, h for high, the formula can be written as : writing on the blackboard: V = abh. Produce projection: 4. Self-Example 1. A rectangular, length 7 cm, width 4 cm, height 3 cm, its volume is how much? 7 × 4 × 3 = 84 (cc) A: its volume is 84 cubic centimeters. (B) cube size. 1. [Demonstration courseware Into what graphics? The volume of the cube can find out? 2. Exercise edge length of 2 centimeters,vibram five fingers outlet, its volume is much square decimeter? 2 × 2 × 2 = 8 (dm) edge length of 4 cm, its volume is how many square centimeters? 4 × 4 × 4 = 64 (cc) 3. Na cube volume formula. Teacher writing on the blackboard: Volume = edge length of cube edge length × × edge length. With V the volume table, a long edge that V = a · a · a or V = 4. Independent solution Example 2. Plant to produce a bright cube tray cardboard boxes, edge length is 5 centimeters, the volume is how many dm? (Dm 3) A: The volume is 125 cubic decimeter. (C) to discuss the volume of cuboid and the cube is the same method of calculation. Student satisfaction: the cube is a special box. In the cube in length, width and height are equal, so the formula b, h is turned into a. Transformation, the cuboid and the cube volume formula to write out different, but the essence is the same calculation method, are length × width × height. Third, consolidate feedback. 1. A mouth filling. Cuboid length / minute meters wide / min meters / decimeters volume (cubic decimeter) 5124351024 cube edge length / m volume (cubic meters) 6300. 4 2. Is wrong and the reasons. ① () ② () ③ a cube edge length of 4 centimeters, its volume is: (dm) () ④ a rectangular, 5 centimeters, width of 4 centimeters, height 3 cm, its volume is 60 decimeter. () Fourth, the class concluded. Today's lesson we are learning new knowledge? Who will talk? Fifth, after-school job. 1. A brick's length is 24 cm, width is 12 cm thick is 6 cm. Its size is the number of square centimeters? 2. A cube of stone, edge length is 7 centimeters, the size of this stone is how many dm? 1 cubic decimeter stone weight 2.7 kg, the number of kilograms heavy piece of stone? Sixth, writing on the blackboard design. Teaching Objectives 1. Understand and cuboid and the cube size is calculated. 2. Able to use a long, calculating the volume of the cube to solve some simple practical. 3. Students satisfied reasoning, abstraction ability. Teaching focus cuboid and the cube size is calculated. Teaching difficult cuboid and the cube formula of the volume. Teaching aids and teaching aids: 1 cubic centimeter cube 24, 1 cubic decimeter cubic one. Learning Tools: 1 cc cube 20. Teaching process () one. 1. Question: What is the volume? 2. Ask each student come up with four 1 cubic centimeter cubes, put them to fight together, placed in a row. Teacher questions: What makes up a body? (Rectangular) is the volume of this rectangular number? (4 cc) How do you know? (This box consists of four 1 cm 3 cube makes up) and then fight a 1 cubic centimeter cube on it? (5 cm3) conversation cited: the volume of an object to be measured, depends on the object containing the number of volume units. Today we learn how to calculate the cuboid and the cube size. Blackboard issue: volume two of cuboid and the cube, learning a new lesson. (A) the volume of rectangular [animation Fight swing rectangular: ask someone for a group of four, with 12 small rectangular cube to put to fight, and were put down the box's length, width and height. 2. Students reported the teacher writing on the blackboard: Teacher questions: The cuboid have in common? (Volume equivalent) difference? (Different data) Why different volume equal to it? (They all contain the same amount of volume of units - 12 one cubic centimeter) teachers guide: Please observe the rectangular put his long, wide, high number, in addition expressed the cuboid length, width, length of high, but also What does that mean? Teachers and students to accept: that long number, for example 4, except that 4 cm long, but also expressed a row put the four 1 cubic centimeter cube. By the same token, also said that a wide number of put a few rows that have a high number of said layers. 3. [Animation Put a row of four 1 cc total cube → put → put three rows of two Group II: above requirements put 3 cm long, 3 cm wide, 2 cm high rectangular. Put a row of three 1 cc of a cube placed a total of three rows → → Layer 2 third place: imagine a length of 5 cm wide and 4 cm, height 3 cm rectangular, to say the volume. Put a row of five total 1m3 cube → put → put 4 rows of 2-layer thinking: Please observe these data derived from the practice, put into a fight with the graphics, look at these figures and the volume of cuboid There is no relationship? What is the relationship? (Rectangular volume just its length, width and height of product) teacher writing on the blackboard: the volume of cuboid = length × width × height Teacher: The V is volume, a said long, b said width, h for high, the formula can be written as : writing on the blackboard: V = abh. Produce projection: 4. Self-Example 1. A rectangular, length 7 cm, width 4 cm, height 3 cm, its volume is how much? 7 × 4 × 3 = 84 (cc) A: its volume is 84 cubic centimeters. (B) cube size. 1. [Demonstration courseware Into what graphics? The volume of the cube can find out? 2. Exercise edge length of 2 centimeters, its volume is much square decimeter? 2 × 2 × 2 = 8 (dm) edge length of 4 cm, its volume is how many square centimeters? 4 × 4 × 4 = 64 (cc) 3. Na cube volume formula. Teacher writing on the blackboard: Volume = edge length of cube edge length × × edge length. With V the volume table, a long edge that V = a · a · a or V = 4. Independent solution Example 2. Plant to produce a bright cube tray cardboard boxes, edge length is 5 centimeters,MBTシューズ 販売店, the volume is how many dm? (Dm 3) A: The volume is 125 cubic decimeter. (C) to discuss the volume of cuboid and the cube is the same method of calculation. Student satisfaction: the cube is a special box. In the cube in length, width and height are equal, so the formula b, h is turned into a. Transformation, the cuboid and the cube volume formula to write out different, but the essence is the same calculation method, are length × width × height. Third, consolidate feedback. 1. A mouth filling. Cuboid length / minute meters wide / min meters / decimeters volume (cubic decimeter) 5124351024 cube edge length / m volume (cubic meters) 6300. 4 2. Is wrong and the reasons. ① () ② () ③ a cube edge length of 4 centimeters, its volume is: (dm) () ④ a rectangular, 5 centimeters, width of 4 centimeters, height 3 cm, its volume is 60 decimeter. () Fourth, the class concluded. Today's lesson we are learning new knowledge? Who will talk? Fifth, after-school job. 1. A brick's length is 24 cm,Beats By Dre Studio, width is 12 cm thick is 6 cm. Its size is the number of square centimeters? 2. A cube of stone, edge length is 7 centimeters, the size of this stone is how many dm? 1 cubic decimeter stone weight 2.7 kg, the number of kilograms heavy piece of stone? Sixth, writing on the blackboard design. More articles related to topics: tods shoes outlet grk zxi pfzv iwz herve leger toronto sae sxm chhl hit |
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