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K-12Grade 9

Mathematics Lesson Plans

We've got 16 competencies loaded for this subject — Mathematics for Grade 9 under K-12. Use this page to scan the term breakdown (3 terms), pull Budget of Work when it's available, and jump straight into an AI plan that already knows DepEd's SY 2026-2027 calendar. No more hunting through three different folders on a Sunday night.

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16 competencies
121 learning resources

1

2 competencies

Illustrate and describe point, line, ray, line segment, angle, and plane using models and geometric notations.

Measurement and Geometry
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Construct perpendicular and parallel lines.

Measurement and Geometry
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2

2 competencies

Determine angle measures involving angle pairs, parallel and perpendicular lines, and parallel lines cut by a transversal.

Measurement and Geometry
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Identify the relationships between angles formed by parallel lines cut by a transversal.

Measurement and Geometry
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5

2 competencies

Graph a linear function and determine its: a. domain b. range c. intercepts d. slope

Number and Algebra
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Represent linear relationships found in real-life situations using different representations.

Number and Algebra
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6

2 competencies

Solve problems involving linear functions.

Number and Algebra
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Determine conditions that guarantee parallelism and perpendicularity of lines.

Measurement and Geometry
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9

1 competency

Solve problems involving parallelograms, rectangles, squares, or rhombuses by applying their different properties.

Measurement and Geometry
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10

1 competency

Prove properties of parallelograms by applying the relevant theorems.

Measurement and Geometry
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3-4

4 competencies

Determine the domain and the range of a function expressed in different representations.

Number and Algebra
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Express the relationship between two variables as a function.

Number and Algebra
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Determine the slopes (as rate of change) and the zeros of linear functions represented in: a. graphs b. equations c. tables of values

Number and Algebra
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Identify relations that are functions based on the definitions of relations and functions.

Number and Algebra
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7-8

2 competencies

Classify quadrilaterals based on formal definitions.

Measurement and Geometry
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Use properties of parallelograms to find measures of angles, sides, perpendicular height, and diagonals.

Measurement and Geometry
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