A Detailed Lesson Plan

In

MATHEMATICS V

Prepared by:

CADIONG, AMADO M.Teacher Applicant

I. Objective:

After a series of activities, the Grade IV pupils are expected to identify the three to four-sided polygons with 75 % level of accuracy.

Values: Cooperation and accuracy

II. Subject Matter:

A. Topic: Identifying Three to Four-Sided PolygonsB. Reference: PELC 4, pp. 335-338 Conceptual Math and Beyond IV, pp. 225-233C. Materials: charts, flashcards, pictures of shapes, strips of paper, manila paper, Pentlepen, scissors, ruler, glue and old newspaperD. Concepts: A polygon is a closed figure. A three-sided polygon is called triangle. A Four-sided polygon is called quadrilateral. Three-sided polygons are divided into three: Isosceles Triangle that has two equal sides; Scalene Triangle that has no equal sides and Equilateral Triangle that has three equal sides.Four-sided polygons are divided into five: Square that has four equal sides and all angles are right angles; Rectangle that has two equal sides and all angles are right angles; Trapezoid that has one pair of parallel sides; Rhombus that has four equal sides and two pairs of parallel sides and Parallelogram that has two equal sides and two pairs of parallel sides.

E. Methodology : Inductive Method

III. Learning Procedures:

Teachers ActivityPupils Activity

A. Preliminary Activities

1. Review

Class, what did we discuss last meeting?

Thats right! And with regards to that we will have a game called, Who Am I?

I will flash cards and you will guess the kind of angle being described on each flashcard.

Was the instruction clear, children?

Okay, and then lets get started.

I am less than 90. Who am I?

I measure 110. Who am I?

I measure 18. Who am I?

I measure 90. Who am I?

I am more than 90 but less than 180. Who am I?

I am happy to know that you really learned in our previous discussion.

Sir, we discussed about the kinds of angles.

Yes, sir!

Acute Angle

Obtuse Angle

Acute Angle

Right Angle

Obtuse Angle

B. Lesson Proper

1. Motivation

Class, observe the chalkboard in front, what do you think its shape?

Very good!Why did you say that it is a rectangle?

Very good!

Do you think that rectangle is a polygon? Why?

Thats right!Sir, it is rectangle.

Because, it is composed of four sides with two equal sides.

Yes, it is a polygon, because it is a closed-figure.

2. Presentation

Class, I will show you two sets of figures. Tell me what are the similarities of all the figures in one set and differences of the figures between two sets.Set A

Set B

Thats right!Based on your observation on the figures, what do you think our topic for today?Exactly!

All the figures in Set A have three sides while all the figures in Set B have four sides.

About three to four-sided polygons.

3. Discussion

Class, going back to the two sets of figures. Are all these figures a polygon?

Why do you think it is a polygon?

Thats right. Now let us focus on the first set of figures. These polygons are called triangles.

Isosceles Scalene EquilateralTriangle Triangle Triangle

Based on these figures how will you describe triangle?

Very good!

Now children, a triangle is divided into three kinds. The Isosceles Triangle, Scalene Triangle and Equilateral Triangle. And all the sides have corresponding measure. You will describe each kind of triangle by filling up the table.

Very good!

Yes, sir!

Because, it is a closed figure.

A triangle is a three-sided closed figure or polygon.

Based on your answer on the table, how will you describe an Isosceles Triangle?

Based on your answer on the table, how will you describe a Scalene Triangle?

Very good!

Based on your answer on the table, how will you describe an Equilateral Triangle?

Now, children let us focus on this second set of figures which is called quadrilateral. Based on these figures, how will you describe a quadrilateral?

Very good!

Square Rectangle Trapezoid Rhombus Parallelogram

These figures are kinds of quadrilaterals and all the sides have corresponding measure which you will use in describing each.You will describe each figure by filling up the table.

Very good!

Based on your answer on the table, how will you describe a Square?

Very good!

Based on your answer on the table, how will you describe a Rectangle?

Very good!

Based on your answer on the table, how will you describe a Trapezoid?

Why it is called parallel lines?

Very good!

Based on your answer on the table, how will you describe a Rhombus?

Very good!

Based on your answer on the table, how will you describe a Parallelogram?

Very good!

Isosceles Triangle No. of sides3No. of Equal Sides2

An Isosceles Triangle is a three-sided polygon that has two equal sides.

Scalene Triangle No. of sides3No. of Equal Sides0

A Scalene Triangle is a three-sided polygon that has no or 0 equal sides.

Equilateral Triangle No. of sides3No. of Equal Sides3

An Equilateral Triangle is a three-sided polygon that has three equal sides.

A quadrilateral is a four-sided polygon.

SquareNo. of sides4No. of Equal Sides4DistinctionAll angles are right angles

A square is a four-sided polygon with four equal sides and all angles are right angles.

RectangleNo. of sides4No. of Equal Sides2DistinctionAll angles are right angles

A rectangle is a four-sided polygon that has two equal sides and all angles are right angles.

TrapezoidNo. of sides4No. of Equal Sides2Distinction1 pair of parallel sides

A trapezoid is a four-sided polygon that has two equal sides and one pair of parallel sides.

Because, the two lines do not intersect at some point even it will be extended.

RhombusNo. of sides4No. of Equal Sides4Distinction2 pairs of parallel sides

A rhombus is a four-sided polygon that has four equal sides and two pairs of parallel sides.

ParallelogramNo. of sides4No. of Equal Sides2Distinction2 pairs of parallel sides

A Parallelogram is a four-sided polygon that has two equal sides and two pairs of parallel sides.

4. Exercises/Fixing Skills

Class, look under your chair. Whether it has a polygon cut out. Those who have underneath his/her chair will name and describe the polygon he/she got. Did you get me, class?

Yes, sir!

Isosceles Triangle. It is three-sided polygon that has two equal sides. An Scalene Triangle. It is a three-sided polygon that has no or 0 equal sides.

An Equilateral Triangle. It is a three-sided polygon that has three equal sides.

A square is a four-sided polygon with four equal sides and all angles are right angles.

A rectangle. It is a four-sided polygon that has two equal sides and all angles are right angles.A trapezoid. It is a four-sided polygon that has two equal sides and one pair of parallel sides.

A rhombus. It is a four-sided polygon that has four equal sides and two pairs of parallel sides.

A Parallelogram. It is a four-sided polygon that has two equal sides and two pairs of parallel sides.

C. Generalization

Class, earlier we fill up the table in order to describe the kinds of polygons. Now I will remove the strips and jumble it down. You will get one strip and put it in the right column or row in the table. Is the instruction clear children?

Why it is important to cooperate in a group activity?

Thats right!

Yes, sir!

Isosceles triangle Scalene triangle Equilateral Triangle No. of sides333No. of Equal Sides203

Square Rectangle Trapezoid Rhombus ParallelogramNo. of sides44444No. of Equal Sides42242DistinctionAll angles are right angles.All angles are right angles.1 pair of parallel sides.2 pairs of parallel sides.2 pairs of parallel sides.

So that, your listener will not be confused of what you are describing.

So that the group activity will finished early or ahead of time.

D. Application

Class, you will have a group activity. I will group you into four. Each group must choose a leader who will serve as reporter and a secretary who will write the output.

Using the newspaper, each group will cut two polygons according to the direction given. Then paste it in the manila paper creatively. Write the name of the polygon and indicate the correct measurement.

Making of the output is good for 2 minutes and after that each leader will explain your work for one minute.

Each group will be rated using the following rubrics.Criteria Level of Performance

531

AccuracyThe measurement and name of the polygon is correctThere is a mistake in either the measurement or name of the polygon.Both of the measurement and name of the polygon is wrong.

DiscussionThe explanation of the reporter is clear and correct.There are some mistakes in the explanation of the reporter.There are many mistakes in the explanation of the reporter.

Creativity The output is very creative.The output is slightly creative.The output is not creative at all.

TimelinessThe group finished the task before the given time ended.The group finished the tasked within the given time.The group finished the task after the given time ended.

CooperationAll members of the group cooperated.Many members of the group cooperated.Very few members of the group cooperated.

IV. EVALUATIONDirection: Identify the name of the polygon being asked on each item. Choose your answer from the words in the box.

TriangleRectangleRhombusTrapezoidParallelogramScaleneIsoscelesQuadrilateralEquilateralSquareAnglePolygon

Square 1. It has four equal sides and all angles are right angles.Equilateral 2. It is a 3-sided polygon with three equal sides.Isosceles 3. It is a 3-sided polygon with two equal sides.Trapezoid 4. It is a 4-sided polygon with one pair of parallel sides.Parallelogram 5. It is a 4-sided polygon with two pairs of parallel sides and two equal sides.Quadrilateral 6. It is a closed figure composed of four sides.Scalene7. It is a 3-sided polygon with no or 0 equal sides.Rectangle 8. It is a 4-sided polygon with two equal sides and all angles are right angles.Triangle9. It is a closed figure composed of three sides.Rhombus 10.It is a 4-sided polygon with four equal sides and two pairs of parallel sides.

V. ASSIGNMENTDirection: Draw the following figures and indicate the measurement of the sides in centimeters (cm).

ParallelogramRhombus Isosceles TriangleScalene triangleTrapezoidEquilateral TriangleRectangleSquare

Name:____________________________________________ Date:_________________ Score:________________

EVALUATION

Direction: Identify the name of the polygon being asked on each item. Choose your answer from the words in the box.

TriangleRectangleRhombusTrapezoidParallelogramScaleneIsoscelesQuadrilateralEquilateralSquareAnglePolygon

______ 1. It has four equal sides and all angles are right angles.________ 2. It is a 3-sided polygon with three equal sides._______3. It is a 3-sided polygon with two equal sides._________4. It is a 4-sided polygon with one pair of parallel sides.__________5. It is a 4-sided polygon with two pairs of parallel sides and two equal sides.___________6. It is a closed figure composed of four sides._______7. It is a 3-sided polygon with no or 0 equal sides._________8. It is a 4-sided polygon with two equal sides and all angles are right angles.______9. It is a closed figure composed of three sides.__________10.It is a 4-sided polygon with four equal sides and two pairs of parallel sides.