Subject: Mathematics
Grade Level: Grade 3
Objective: Identify and classify different types of angles (right, acute, obtuse)., Measure
angles using a protractor., Apply knowledge of angles in solving real-life problems.
Learning within and across curriculum:
- Within:
1) Geometry - Students can explore shapes and their angles in Art.
2) Science - Understanding angles is crucial in Physics, especially in the study of light
refraction.
3) Physical Education - Angles are important in analyzing movements and strategies in
sports.
ENGAGE:
[Teaching Strategy: Brainstorming]
[Instructional Materials: Whiteboard, Markers]
1) Idea - Conduct a K-W-L Chart activity where students list what they Know, Want to know,
and Learn about angles.
2) Idea - Use a Picture Analysis activity where students identify different angles in everyday
objects.
EXPLORE:
Activity 1: Angle Detectives
[Teaching Strategy: Inquiry-Based Learning]
Materials - Protractors, Worksheets with various angle images
Significance - Develops students' ability to identify and classify angles accurately.
Instructions - Students work in pairs to measure and categorize angles using protractors.
1) Measure the angles marked on the worksheet.
2) Classify each angle as right, acute, or obtuse.
3) Rubric
- Correct measurement - 10 pts.
- Accurate angle classification - 10 pts.
- Collaboration with partner - 5 pts.
Assessment Questions:
1) What is the measure of a right angle?
2) Can you identify an acute angle in your classroom?
3) How do you know if an angle is obtuse?
Activity 2: Angle Art
[Teaching Strategy: Project-Based Learning]
Materials - Paper, Ruler, Pencils, Colors
Significance - Integrates creativity with angle measurement.
Instructions - Students create geometric art by drawing shapes with specific angle
measurements.
1) Draw a triangle with one right angle.
2) Create a quadrilateral with all acute angles.
3) Design a shape with one obtuse angle.
Rubric
- Accuracy of angle measurements - 10 pts.
- Creativity in design - 10 pts.
- Presentation of work - 5 pts.
Assessment Questions:
1) How can you use angles to create interesting shapes in your art?
2) Why is it important to measure angles accurately in this activity?
3) Can you explain the difference between acute and obtuse angles?
Inclusive Activity 3: Angle Hunt
[Teaching Strategy: Experiential Learning]
Materials - None
Significance - Promotes observational skills in real-life settings.
Instructions - Students go on a walk around the school to identify angles in their environment.
1) Find a right angle in the classroom.
2) Spot an acute angle on the playground.
3) Locate an obtuse angle in the hallway.
Rubric
- Correct identification of angles - 10 pts.
- Description of angle locations - 10 pts.
Assessment Questions:
1) Where did you find the most angles during your angle hunt?
2) How did angles help you understand the shapes around you?
3) Can you think of a practical application of angles in your daily life?
EXPLAIN:
Activity 1 - The teacher will demonstrate how to use a protractor to measure angles
accurately, guiding students through the process step by step.
Activity 2 - Students will be given examples of geometric shapes with angles, and the teacher
will explain how to identify and classify each type of angle.
ELABORATE:
[Teaching Strategy: Problem-Based Learning]
Task 1 - Students will measure the angles of objects in their home and create a chart showing
the different types of angles present.
Task 2 - Students will design a treasure map using various angles and write clues based on
the angle measurements.
Supporting Material 1 - "Angles in Everyday Life" - A short story explaining how angles are
used in various professions.
Supporting Material 2 - "Angle Adventures" - A comic book illustrating different angle
scenarios and how they are solved.
EVALUATE:
[Teaching Strategy: Games and Gamification]
[Instructional Materials: Timer, Whiteboard]
Question 1 - What type of angle is formed when the hands of a clock show 3:00?
Question 2 - If an angle measures 100 degrees, what type of angle is it?
Question 3 - How can you use angles to navigate through a maze?
H.O.T.S.:
Question 1 - Explain why understanding angles is important in architecture.
Answer 1 - Understanding angles helps architects create stable and aesthetic structures by
ensuring proper measurements and angles for stability.
Question 2 - How can angles be used in photography?
Answer 2 - Angles are used in photography to create different perspectives and compositions,
influencing the overall look and feel of the image.
Question 3 - Why do we need to know about angles in navigation?
Answer 3 - Knowledge of angles is crucial in navigation to determine directions accurately,
especially in map reading and using GPS systems.
Assignment:
1) Create a mini-book illustrating different types of angles found in nature.
2) Measure and label angles on household objects and create a presentation explaining their
significance.
April 15, 2024
Teaching Mathematics
in Primary Grade
Prepared by: Marniel B. Colastre
BEED 2 section 2
