Lesson plan for Mathematics Form 2: Topic
: Chapter 12 – Solid Geometry II.
Subtopic
: Chapter 12.1 – Understand geometric properties of prisms, pyramids, cylinders, cones and spheres. : Chapter 12.2 – Understand the concept of nets and surface area.
Date
: 20 August 2011, Wednesday
Time
: 9.00 am – 10.20 am (80 minutes)
Class
: 2 Gemilang
Number of students : 25 students Learning objective : a) Understand geometric properties of prisms, pyramid, cylinders, cones and sphere. b) Understand the concept of nets. c) Understand the concept of surface area. Learning outcomes: At the end of the lesson, students will be able to: a) State the geometric properties of prisms, pyramids, cylinders, cones and spheres. b) Draw nets for prisms, pyramids, cylinders and cones. c) State the types of solid given their nets. d) Determine the surface area of prisms, pyramids, cylinders, cones and spheres. Activities
:
a) Set induction: shows picture of landscape. b) Development of the lesson: Power point presentation, discussion, 2-way interaction.
c) Evaluation: Gives worksheet and asks students solve the problems in groups. d) Closure: Makes conclusion on today’s lesson and gives homework.
Prior knowledge
:
1.
Students should be able to understand and use the concept of Solid Geometry II.
2.
Students should be able to draw nets of solid geometry and determine the surface area of solids.
Teaching aids
:
White board, imager, model, computer, power point, activity (Worksheet 1 and Worksheet 2) and Form 2 Mathematics text book.
Creative and Critical Thinking skills : Compare and contrast, reflection and investigation. Attitudes and values : Appreciating the contributions of solid geometry to our daily life,
meticulous, diligent, confident and
cooperative.
Activity (Discourse) Step / Duration
Content
Teacher’s Role
Student’s Role
Learning Environment Teaching methods / Strategies / Values / Thinking Skills / Materials
Step 1 Induction Set (5 minutes)
Attract student’s interest Teacher gives a real life by giving a real life example such as picture of example which is related landscapes. to the concept of solid geometry II. Teacher asks students about Stimulate and challenge the landscape. students to think. i) What shape can Introduce today’s topic you see from the to students. landscape? ii) What is the relationship between these pictures with our topic?
Students pay attention and listen actively to teacher’s explanation. Students look at the picture shown. Students give responses to the question.
Method: Expository method Strategies: Teacher centered Using time table Values: Confidence Meticulous Thinking Skills: Generating ideas
Students give responses to the question actively.
Materials: Model of solid geometry Power point
Teacher ask student to read the definition.
Students response actively.
Teacher ask volunteer student to explain their knowledge about properties of geometric solids using concrete models.
Students pay attention and listen to their friend’s explanation.
Teacher gives examples using models.
Students alert about the examples and give responses.
Method: Expository method Cooperative Learning method Strategies: Students centered Use manipulative materials (model) Values: Confidence
Teacher asks students about the shape of the solid geometry. Teacher introduces today’s topic to students. Introduce the definition of solid geometry II as follows : Solid geometry is concerned with threedimensional shapes. Step 2 Some examples Instructional of threeDevelopment dimensional
(15 minutes)
shapes are prisms, pyramids, cylinders, cones and spheres. Also discuss some nets of solids.
From the information in the concrete models, teacher draws the examples of geometry solids.
Teacher ask student to Determine the properties interpret what they can see about the model given. of prism and pyramid.
Step 3 Instructional
Teacher asks student draw nets Students give responses for prisms, pyramids, actively. cylinders and cones. Teacher discusses the answers together with the students.
Identify the surface area of prism and pyramid.
Students pay attention.
After that, teacher tells student that the properties of prisms and pyramids where: A prism is a solid that has two congruent parallel bases that are polygons. A pyramid is a solid
Students response actively.
Alert Meticulous
Thinking Skills: Interpretation of information Generating idea Materials: Presentation of Power Point
Students try to interpret and give response actively. Students pay attention and listen carefully to teacher’s explanation. Students ask questions if they do not understand.
Method: Expository method Discussion Explaining and questioning method Strategies: Student centered Active learning Values: Confidence
with a polygon base and connected by triangular faces to its vertex.
Development (20 minutes)
Teacher ask student to identify the surface area of prism and pyramid and give explanation. Teacher gives an example to find the surface area of prism and pyramid. After that, teacher calls students randomly to find the surface area of prism and pyramid.
Students give their explanation. Students pay attention and listen carefully. Students come forward to paste up and answer that question.
Meticulous Alert
Thinking Skills: Generating ideas Compare and contrast. Materials: Presentation of Power Point Model
Students give responses actively.
Teacher discusses the answers together with the students.
Step 4
Determine the properties Teacher gives an example to find the surface area of of the: cylinder, cone and sphere. a) Cylinder Teacher asks the students to b) Cone separate into their group. c) Sphere
Instructional Development Identify the surface area of cylinder, cone and (20 minutes) spheres.
Teacher gives instructions to the student to seat in a group based on the group cylinder, cone or sphere.
Students pay attention.
Students obey teacher’s instruction. Students listen and follow the instructions.
Method: Cooperative Learning Method Numbered-HeadTogether Strategies: Students centered Values: Confidence Meticulous
Construct a problem to promote students’ understanding in topic and how to solve problems involving surface areas. Step 5 Evaluation (15 minutes)
Teacher explains the steps in carrying out group activities.
Students pay attention.
Teacher gives a task and ask student to find out the solution. (Worksheet 1).
Students read the task and try to solve together with their group members.
Teacher ask group leader to show their answer.
The group leader shows their answer.
Teacher discusses the answers together with the students.
Students pay attention and give responses actively.
Teacher gives an example to solve the problems involving surface areas.
Students pay attention.
Teacher gives a task and ask student to find out the solution. (Worksheet 2).
Students read the task and try to solve individually.
Teacher discusses the answers together with the students
Students pay attention and response actively.
Cooperation Alert
Thinking Skills: Generating ideas Materials: Presentation of Power Point Worksheet 1
Method: Cooperative Learning Method Send A Problem Strategies: Students centered Values: Confidence Meticulous Cooperation Honesty
Diligent
Thinking Skills: Creating a question Materials: Presentation of Power Point Worksheet 2
Make conclusion for the today’s lesson. Step 6 Closure ( 5 minutes )
Teacher gives homework to students. (Text book page 119)
Teacher asks students to reflect on what they have learned about the concept of geometric solids. Teacher summarizes the important points of today’s lesson through power point presentation. Teacher gives homework to students as follow-up to what
Students make reflection of what they have learned.
Method: Questioning
Students pay attention and listen to the summary.
Strategies: Students centered Value: Confidence
Students take notes about the exercises that given by teacher.
Thinking Skills: Making reflection Making conclusion
they have learned today.
Materials: Presentation of Power Point
