Grade 9

Sphere

IntroductionA sphere is one of the most familiar curved-surface solids in everyday life. Footballs, marbles, and many round containers are...

Discriminant Function

IntroductionIn a quadratic equation, there is an important component called the discriminant. The discriminant is used to determine the type...

Quadratic Equations

IntroductionConsider the following problem. A bathroom wall has a rectangular shape and will be covered with square tiles. The length...

Similarity and Congruence

IntroductionThis lesson discusses two important geometry ideas: similarity and congruence. Both are used to compare figures based on shape, size,...

Cone

IntroductionA cone is a solid with one circular base and one apex. This lesson covers the elements of a cone,...

Curved-Surface Solids

IntroductionCurved-surface solids include cylinders, cones, and spheres. This article focuses on the cylinder, a solid formed by two parallel congruent...

Dilation

Introduction Learning ObjectivesAfter studying dilation, students are expected to be able to: Explain dilation as a geometric transformation in contextual...

Rotation

Introduction A. Learning ObjectivesAfter studying the rotation material (rotation) This is expected to: Explain geometric transformations (rotation) which is connected...

Translation

Introduction Learning ObjectivesAfter studying translation, students are expected to be able to: Explain translation as a geometric transformation in contextual...

Quadratic Functions

Introduction Basic Competencies3.2 Explain quadratic functions using tables, equations, and graphs. 3.3 Explain the relationship between the coefficients and discriminant...