I. Aims : 1. Knowledge : Help students know the rectangle has 4 sides : there are 2 equally short sides and 2 equally long sides Help students know rectangle has 4 square corners 2. Skill : Students can draw and write the name of rectangles 3. Attitude : Students are interested in learning II. Prepare : 1. Teacher : Powerpoint Rectangles, pictures in studentbook 2. Students : Math studentbook and textbook III. Procedure : 1. Warmup ( 3 mins ) • Play a game “ Square corners counter ” Teacher divided into 2 teams. Each team is given a drawing. The team counts right angles in drawing faster, that team wins Teacher comments and summaries 2. Introduction to rectangles ( 5 mins) • Teacher hold a rectangle then ask students what kind of shape it is, call out its name. • State aims and requirement about the lesson • Write the name of lesson on the board
Trần Ngọc Thủy – D2016C RECTANGLE I Aims : Knowledge : - Help students know the rectangle has sides : there are equally short sides and equally long sides - Help students know rectangle has square corners Skill : Students can draw and write the name of rectangles Attitude : Students are interested in learning II Prepare : Teacher : - Powerpoint - Rectangles, pictures in studentbook Students : Math studentbook and textbook III Procedure : Warm-up ( mins ) Play a game “ Square corners counter ” - Teacher divided into teams Each team is given a drawing - The team counts right angles in drawing faster, that team wins - Teacher comments and summaries Introduction to rectangles ( mins) Teacher hold a rectangle then ask students what kind of shape it is, call out its name State aims and requirement about the lesson Write the name of lesson on the board New lesson (10 mins) Take shape in rectangles - Require students to check angles by square and show result: Each angle A, B, C, D are right Rectangle has right angles - Require students to measure rectangle’s sides by ruler and show the result: AB = CD, AC = BD + sides AB and CD are long sides + side AC and BD are short sides A rectangle has long equal sides, short equal sides - Define “length” and “width” of rectangle: “The length of long sides is called length, the length of short sides is called width” - Show the conclusion: A rectangle has right angles, long equal sides, short equal sides Guide students to learn by heart rectangle’s property - Hang the conclusion board and require learners speak out loud all together then Practice (12 mins) one by one and learn by heart 3.1 Exercise Work in pair to choose the rectangles Teacher invite a random group to come up and show the result 3.2 Exercise Measure and state the length of sides of given rectangles (work in books) Invite students to come up and write the results 3.3 Exercise Ask students to find the ractangles in the image and answer questions: “How many rectangle are there? Call out its names?” Require students to find the length and width of rectangles in the image write results on notebooks Invite students come up and write the results on board 3.4 Exercise Ask students to draw one more line segment to create a rectangle into the books Invite students to come up and work on boars Ask students if they have other ideas and show the way how to it Sum-up ( mins ) Ask students to repeat the conclusion: “A rectangle has right angles, long equal sides, short equal sides” Teacher feedback about the lesson Require students to prepare the next lesson “Squares” ... Work in pair to choose the rectangles Teacher invite a random group to come up and show the result 3.2 Exercise Measure and state the length of sides of given rectangles (work in books) ... many rectangle are there? Call out its names?” Require students to find the length and width of rectangles in the image write results on notebooks Invite students come up and write the results