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LESSON PLAN

Name of School : SMP-BI Negeri 1 Banda AcehSubject : MathematicsClass / Semester : VII / ITime allocation : 1 x 25 minutes

A. Competence standard : 2. Understanding the algebraic forms, linear equations and linear inequalities with one variable.

B. Basic competence : 2.3 solving linear equations with one variableC. Indicators : To solve the problem in daily life by application of linear

equation with one variable.

D. Learning ObjectivesStudent able to solve the problem in daily life by application of linear equation with one variable from discussion, game, assignment method, and snowball throwing model.

E. Topics Linear Equation with One Variable

F. Learning Method Model : cooperative learning snowball throwing. Methods : discussion, game, and assignment. Approach : deductive.

E. Learning Activities

ACTIVITIES PHASETIME

ALLOCATION1. Opening activities

Teacher begins the lesson with greetings. Teacher extends learning objectives to student. Teacher reminds students about algebra by asking

some questions and giving some examples of algebra, such as: Do you remember about statements and open sentences?What the difference of statement and open sentence?

Teacher shows slide to point out a picture of shapes in daily life.

Present goals and

set

5 minutes

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Teacher explains how important the lesson is in daily life.

What do you think about the pictures?

A farmer has a rectangular-shaped land. Width of the land is 6m shorter than its length. If the circumference of the land is 60m, how to find the area of the farmer’s land?

Can you imagine how to solve the problem? What the meaning of “Width of the land is 6m shorter

than its length”? Is the sentence open sentence? Can you write the open sentence in mathematical

sentence? Teacher explains about learning model for today which

is implementing cooperative learning type Snowball Throwing.

2. Main activities Teacher informs the students that the activities are

going to be done and they can read their textbook about the topic to add their knowledge and to make easier for finding ideas.

Present information

15 minutes

Teacher makes 3 groups heterogenic; each group consists of 3 to 4 persons.

Teacher asks each group to choose the leader of their group.

Teacher calls the leaders, and then, the leaders give ideas about the mathematical model of the farmer’s land problem and explain the way to get solution of the problem.

While teacher and the leaders discuss about it, another students think mathematical model of the problem also.

After the leaders have the right answer, they return and share the explanation to their group.

Organize students into

learning teams

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Teacher gives question in worksheet to each group(a) Exploration

The students discuss the meaning of problem in the worksheet.

The students discuss anything of worksheet in their group and teacher guide them.

Assist team work and

study

(b) Elaboration Teacher asks each student to make a problem about

linear equation with one variable on a paper, then, the paper is made like a snowball. Students throw the ball to their friend.

The students have 2 minutes to solve the problem.(c) Confirmation

Teacher checks the students work and gives reward to student that has higher score.

Teacher and students together solve the problems that students need more explanation.

Test over materials

3. Closing activities Some students give summarizing from the topics, guided

by the teacher. Teacher asks students to answer some reflection

questions:1. What did you learn today?2. After following this lesson, what is your opinion today?3. Which part of the lesson needs more explanation?4. Which part of the lesson do you feel more interesting and more understandable?

Teacher informs learning topics for the next meeting and gives home work to the students.

5 minutes

F. Equipments and Learning Resourcesa. Equipments : LCD Projector

b. Learning resources : Pictures Power point. Nuharini, Dewi dan Tri Wahyuni (2008). Matematika Konsep dan Aplikasinya

untuk Kelas VII SMP/MTs. Jakarta: Pusat Perbukuan Departemen Pendidikan Nasional

Worksheet.

G. Assesment

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Technique: Test and non-test (for student’s worksheet)Kinds: writtenTypes: essayExample of problem:

The price of 1kg grape is 3 times the price of 1kg orange. If Ana buy 2kg grape and 5kg orange then she must pay Rp38.500,00. Find the price of 1kg grape and 1kg orange.

Alternative Solution:

Suppose x is the price of 1kg orange, then the price of 1kg grape is 3x2(3x) + 5x = 385006x + 5x = 3850011x = 38500x = 3500so, the price of 1kg orange is Rp3.500,00 and the price of 1kg grape is 3x Rp3.500,00 or Rp10.500,00.

Approved by:

Supervisor I

Dr. Rahmah Johar, M. Pd

Supervisor II

Linda Victoria, M. Sc

Banda Aceh, November 24, 2011Student,

Cut Ria Deviana0806103020027