IN

MATHEMATICS

I. Objectives:

At the end of the lesson, the students are expected to:

a. Find the volume of a prism

b. Solve problems involving finding the volume of a prism

II. Subject Matter:

Topic: Volume of a Prism

Reference:Math Essential Geometry for 3rd year

Materials:Presentation

Prerequisite concepts/ Skills:Volume of Prism

Process skills to be emphasized:Logical Thinking

III. Procedure:

Teacher’s Activity| Pupil’s Activity|

A. Preliminary Activities 1. Drill Answer orally. 1. 23 2. 53 3. 73 4. 92 5. 112 2. Review Tell whether the following is a prism or not. Write Prism if it is a prism and write the kind if it is not. Try these on a ¼ sheet of paper. 1. 2. 3. 4. 5. 3. Checking of AssignmentB. Lesson Proper 1. Motivation Answer orally. 1. What kind of tree does a math teacher climb? 2. What do you have to know to get top grades in geometry? 3. What do your eyes do when you see a tough geometry problem? 4. Which triangles are the coldest? 5. What's the best dessert in the Math Teacher's Café? 2. Presentation A square gift box with a height of 5 cm. If you were to fill the box with confetti, what is the maximum amount of confetti (in cubic centimeter) you could use? How can we get the amount of confetti that can be filled in the box? Very Good!! We must get the volume of the cube by means of using the formula V=s3, where V is volume and s is the side of a cube. Again, what is the measure of the cube? Correct! Since you are given 5 centimeter as the side of a cube, multiply 5 by itself three times. What is the volume of the cube? That’s right! Using the formula in getting the volume of a cube V= s3, we will come up with an answer of 125. Another example. What is our first step to solve our problem? Very Good students!! A rectangular box is to be filled by marbles, given the height as 13 cm, the length 9cm and the width 7cm. Find the amount of marbles that can filled in the box. So what would be our formula in getting the volume of the pyramid? Correct.Substituing the value of the length, the width and the height. What would be the outcome? Correct.Another example. If you have a triangle with a square as its base that has sides that measures 19 centimeter, has a height of twenty four centimeter, and its length that measures forty seven centimeter, what is the volume of the triangular prism? What is the formula in getting the volume of a triangular prism? Correct. Substituting the value of the height, base and length using the formula, what is our final answer? How about if the given is only the base which measures 19cm and the height that measures 24cm? What would be the value of our length? Correct. 3. Generalization How to get the volume of a prism? 4. Fixing Skills Answer the following given word problems. 1. What is the volume of a prism whose ends have an area of 25 in2 and which is 12 in long? 2. Find the volume of the rectangular prism or cuboid. 3. Compute the volume of the given solid. Round to the nearest tenth.Rectangular prism: length 2.3 cm, width 1.5 cm, height 5.7 cm 4. 5. 5. Application 1. What is the volume of a rectangular prism with a height of 10 m, a width of 14 m, and a height of 20 m? 2. The measure of the edge of a cube is 7 cm. What is the volume of the cube? 3. Angelica is measuring the box on the table. She measured the length, width, and height of the box and found out that it has a volume of 40...