Dear learner: Welcome to Grade Nine Mathematics Module 2 !
MODULE LEARNING OUT COME/OBJECTIVES
Dear learner: At the end of the module 2, you should be able to:
- Identify the hypotenuse, opposite and adjacent of a right-angled triangle.
- Describe the basic properties of a right-angled triangle. Define sine, cosine, and tangent ratio.
- Identify regular polygons.
- Solve problems on area and perimeter of regular polygons.
- Find the measure of each interior or exterior angle of a regular polygon.
- Explain properties of regular polygons.
- Distinguish between congruent and similar plane figures.
- Apply postulates and theorems in order to prove congruency and similarity of triangles.
- Solve problems on perimeters and areas of similar triangles and similar polygons.
- State and use the criteria for similarity of triangles viz. AAA, SSS and SAS.
- Prove the Pythagoras Theorem.
- Apply these results in verifying experimentally (or proving logically) problems based on similar triangles.
- Conceptualize vectors in the sense of direction and magnitude symbolically.
- Perform operations on vectors.
- Collect and represent simple statistical data using different methods such as histograms.
- Use facts and basic principles of probability.
- Develop the concept of probability via experimentation and hypothetical events.
MODULE CONTENTS
UNIT ONE: INTRODUCTION TO TRIGONOMETRY
Lesson 1: Revision on Right-angled Triangles
Lesson 2: Trigonometric Ratios
UNIT TWO: REGULAR POLYGONS
Lesson 1: Sum of Interior Angles, Sum of Exterior Angles, Each Interior Angle and Exterior Angle of a Convex Polygon
Lesson 2: Properties of Regular Polygons: Pentagon, Hexagon, Octagon and Decagon
UNIT THREE: CONGRUENCY AND SIMILARITY
Lesson 1: Revision on Congruency of Triangles
Lesson 2: Definition and theorems for similar plane figures
Lesson 3: Ratio of Perimeters, areas of Similar Plane Figures and Construction of Similar Plane Figure, Applications
UNITFOUR: VECTORS IN TWO DIMENSIONS
Lesson 1: Vector and Scalar Quantities and the representation of a Vector
Lesson 2: Vectors Operations, Position Vector and Applications
UNIT FIVE: STATISTICS AND PROBABILITY
Lesson 1: Statistical Data
Lesson 2: Probability
MODULE ASSESSMENT METHOD
- Activities, Tests and assignments
- Mid-term exam
- Final exam
REFERENCES
- Mathematics Grade 9 Student Text Book Based On New Curriculum
- Mathematics Grade 9 Student Text Book Based On old Curriculum
- Extreme Mathematics For Grade 9-10
- Internet Search
Instructor’s Information
Name: Ateka Derso Simegnew
• Email: dersoateka22@gmail.com
• Phone No:+251970709393
