LESSON PLAN RECTANGLE Class: 3 Time: 40 mins I. AIMS: 1. Knowledge:
- Identify the definition of a rectangle.
- Recognize some elements (vertices, sides, corners) of a rectangle. 2. Skills: - Draw the rectangle. - Name the rectangle. 3. Attitude: - Enjoy learning Math. - Interested in the lesson. II. TEACHING AIDS: 1. Teacher: - the sample rectangle shape.
- Eke to check right angles, measure length. 2. Student: - Books, textbooks.
III. METHODS AND TECHNIQUES:
1. Methods: Questions and answers; observation method, group activities,...
2. Techniques: Ask questions, brainstorm,... IV: VOCABULARY: Words Spelling Meaning
1. Right angle /rait/ / ŋ ˈӕ l/ ɡ
An angle of ninety degrees, like any of the (n) four angles in a square. 2. Vertex (n) /və rteks/ ː
The point where two lines join to form an
angle, especially the point that is opposite the base of a triangle. 3. Length (n) /leŋθ/
The distance from one end to the other of an object, etc 4. Width (n) /widθ/ Size from side to side 5. /kær.ək.tə r ˈ s.t ɪ k/ ɪ
A typical or noticeable quality of someone Characteristic or something. (n) V. PROCEDURES: Time Content Teacher’s activities Students’s activities 3-5’ Activities 1:
- Listen and sing a song: - Listen and sing. Warm – up Rectangular world. Object: - Ask: - Answer
- Get excited + Which picture was + Rectangle.
before the mentioned in the song? lesson. + What are the Methods: characteristics of a + Free reply. rectangle? Q&A
- Introduce: “Today, I will - Listen. guide you to learn the characteristics of the angle and edge of the rectangle through the lesson "Rectangle”. - Invite 4 students to repeat the first name of the lesson.
- Write the title of the - 4 students repeat. lesson on the board. - Write the title of the lesson on the notebook. 13-15’ Activities 2:
* Introduce the rectangle: Form new
- Hang on the sample - Observe and listen. knowledge rectangle shape on the board and introduce: This is Object: a rectangle ABCD.
- Recognize - Invite 1 student to some measure the lengths of 2 elements of - Perform. long sides and 2 short sides vertices, and use eke to check 4
edges, corners corners in front of class. of rectangles. - Ask students to read the Methods: results, the teacher writes Visualization, them on the board: observation, + Compare the - Work in pairs to find conversation,
measurements of two out the results. interpretation long sides AB and CD; measure of two
short sides AD and + Rectangle ABCD BC. has 2 long sides AB equal to CD and 2 short sides AD equal to BC. - Write on the board: AB = CD : AD = BC. - Ask: + What do you think
about the 4 corners of the - Observe and write in rectangle? the notebook.
- Conclude: A rectangle - Answer: + All 4
has 4 right angles, 2 equal corners of a rectangle
length sides and 2 equal are right angles. short sides. - Listen and repeat. - Find rectangular objects around the classroom? - Window, doors, board,... 15-17’ Activities 3: Exercise 1: Practice
- Call on a student to read - A student read. Object: the request of the lesson.
- Recognize - Ask students to work in - Work in pairs to find rectangle by pairs. out the results. edge, angle. + Rectangle: MNPQ Methods: and RSTU Visualization, + The shapes ABCD observation, and EGHI are not conversation, rectangles. hands-on practice - Listen. - Comment and conclude. - A student read. Exercise 2:
- Call on a student to read - Do it individually. the request of the lesson. - Ask students to use the ruler to measure the lengths
of the sides of the rectangle. - Share the results in
- Call on students to share front of the class:
the results in front of the + We have: side AB = class. CD = 4cm and side AD = BC = 3cm; MN = PQ = 5cm and MQ = NP = 2cm . - Listen. - Comment and conclude. - A student read. Exercise 3:
- Call on a student to read - Make request. the request of the lesson. - Ask to observe the picture to find all the rectangles in the figure and calculate the lengths of the sides. - Ask students to work in pairs. - Work in pairs to find out the results. + Rectangles: ABNM, ABCD, MNCD. + AB = CD = 4cm + AM = BN = 1cm + MD = NC = 2cm - Listen. - Comment and conclude. Exercise 4: - A student read. - Call on a student to read the request of the lesson. - Ask students to draw a rectangle in their - Draw a rectangle in notebooks. the notebook. - Share how to draw a rectangle. - Listen. - Comment and conclude. 2-3’ Acitivities 3:
- Ask: What are the - Answer the question. characteristics of a Consolidatio rectangle? n - Comment and conclude: A
rectangle has 4 right - Listen and the whole
angles, 2 equal length sides class repeats.
and 2 equal short sides. 1-2’ Acitivities 4: Ask students to go home: - Listen and write in the notebook Homeworks - Practice drawing the diary with the size you choose. - Draw triangles, quadrilaterals and measure the lengths of its sides. - Prepare post: Square