Lesson plan in Math 5 - Kinds of angles

Semi-Detailed Lesson Plan in Math 5

I.              Objective

To identify the different kinds of angles

II.            Learning Content

A.   Topic: Kinds Angles

B.   Reference: Gatbagan, Erlinda E. et al. Maths for Meaningful Lives. Book crafts Publishiing Co. IncMotiva. 2003. Pg. 261-265

C.   Materials: protractor, ruler, bond paper

D.   Values: cooperation, promptness

III.           Learning Experiences

A.   Preparatory Activities

1.    Drill

a.    “Who am I?”

The students will guess what king of polygon is described.

·         I am a polygon with threes ides. I can be found in  pyramid. Who am I?

·         .I have no sides. I shape like a hulahoop that froms a loop. Who am I?

·         I am a four sided polygon. My sides are equal. Who am I?

·         You can find me everywhere. I have four sides. Two pairs of my sides are equal. Who am I?

b.    “Draw Me”

·         Draw a big circle with small circle inside

·         Draw a circle. On top of it, draw a triangle. Below the circle, draw a reactangle.

·         Draw an inverted triangle. Draw a circle enclosing this triangle. Draw a bigger triangle enclosing these two.

2.    Review

Choose the  letter of the correct answer.

1.     

a. Angle         b plane           c. Line                        d. Point

2.   

 

a. Line            b. Line segment       c. Ray             d. Angle

3.   

 

a. Perpendicular lines         b. Intersecting lines c. Line segment        d. Parallel lines

4.   

 

a. Line            b. Line segment       c. Ray             d. Angle

5.   

 

a.    Angle       b plane           c. Line                        d. Point

B.   Developmental Activities

1.    Motivation

“Human Clock”

The teacher will tell a time and the pupil’s hands will be the arms of the analog clock. His group mates will tell if his arms are on the right digits.

What geometric figure represents the arms of the clock?

Of what time requires the biggest space between the right and left hand?

What time requires smallest between the right and left hand?

2.    Presentation and Discussion of the Lesson

The teacher will paste figure of angles with different measurement.

Let the pupils classify the drawn angles on the table below

Less than 90°	Exactly 90°	More than 90° but less than 180°	Exactly 180°	More than 180°

What angles measure less than 90 °?

What angles measure exactly 90°?

What angles measure more than 90 ° but less than 180°?

What angles measure exactly 180 °?

What angles measure more than 180 °?

3.    Fixing Skills

Identify what kind of angle is illustrated.

 

4.    Generalization

What are acute angles? Right angles? Obtuse angles? Straight angles? Reflex angles?

5.    Application:

Find angles in the figure below. Classify them on the table provided

 

Acute angles	Right angles	Obtuse angles	straight angles

IV.          Evaluation

Encircle the letter of the correct answer.

1.    What angle measures exactly 90 °?

a.    Acute        b. Right          c. Obtuse       d. Reflex

2.    What angle measures more than 90°?

a.    Acute        b. Right          c. Obtuse       d. Reflex

3.    The corner of your paper is an example of _____ angle.

a.    Acute        b. Right          c. Obtuse       d. straight

   

V.           Assignment:

No assignment day.