🇵🇭 MATATAG · Junior High School

Mathematics 8

Matematika 8

Everything in the DepEd MATATAG Grade 8 curriculum — special products and factoring, rational expressions, systems of equations, geometric proofs and triangle congruence, plus probability — with free video lessons for each topic.

Handa ka na ba? Pumili ng topic sa baba. — Dr. E

📌 Quarter 1 na! Start here · Simulan dito →

Grade 8 Math by Quarter — MATATAG School Year Guide

Aligned to the MATATAG (since SY 2025–2026). Pumili ng markahan — every lesson is free, bilingual, at may worksheet.

Quarter 2

Ikalawang Markahan
    Per the CG, Q2 covers the Pythagorean theorem, triangle inequality, volumes of cones & spheres, plotting points, distance & midpoint, and financial math — video lessons coming soon. Meanwhile: free worksheets.

    Quarter 4

    Ikaapat na Markahan
    Also in Q4 per the CG: measures of variability and the Fundamental Counting Principle.
    Under MATATAG, Logic & Proofs, Parallel & Perpendicular Lines, and Triangle Congruence moved to Grade 9 (Quarters 1–2). We keep them here for review and for classes using the older sequence.
    1

    Number & Algebra

    Factoring, rational expressions & systems
    Unit 1

    Special Products & Factoring

    Algebra · Polynomials & Factoring
    Q17 lessons · 7 worksheets
    Laws of Exponents
    Unit 1 · Lesson 1
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    Adding and Subtracting Polynomials
    Unit 1 · Lesson 2
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    Multiplying Polynomials — FOIL and Distributive
    Unit 1 · Lesson 3
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    Dividing Polynomials
    Unit 1 · Lesson 4
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    Factoring — Greatest Common Factor (GCF)
    Unit 1 · Lesson 5
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    Factoring Trinomials (a = 1)
    Unit 1 · Lesson 6
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    Zero Product Property and Special Patterns
    Unit 1 · Lesson 7
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    Unit 2

    Rational Algebraic Expressions

    Algebra · Rational Expressions & Equations
    Q15 lessons · 5 worksheets
    Simplifying Rational Expressions
    Unit 2 · Lesson 1
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    Multiplying and Dividing Rational Expressions
    Unit 2 · Lesson 2
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    Adding and Subtracting Rational Expressions
    Unit 2 · Lesson 3
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    Complex Fractions
    Unit 2 · Lesson 4
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    Rational Equations and Applications
    Unit 2 · Lesson 5
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    Unit 3

    Linear Equations in Two Variables

    Algebra · Graphing & Functions
    Q310 lessons · 10 worksheets
    Plotting Points in the Coordinate Plane
    Unit 3 · Lesson 1
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    Graphing Linear Equations
    Unit 3 · Lesson 2
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    Finding X and Y Intercepts
    Unit 3 · Lesson 3
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    Calculating Slope
    Unit 3 · Lesson 4
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    Slope-Intercept Form
    Unit 3 · Lesson 5
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    Point-Slope Form
    Unit 3 · Lesson 6
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    Writing Equations of Lines
    Unit 3 · Lesson 7
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    Parallel and Perpendicular Lines
    Unit 3 · Lesson 8
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    Domain and Range of Functions
    Unit 3 · Lesson 9
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    Solving Piecewise Defined Functions
    Unit 3 · Lesson 10
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    Unit 4

    Systems of Linear Equations

    Algebra · Systems of Equations
    Q35 lessons · 5 worksheets
    Solving Systems by Graphing
    Unit 4 · Lesson 1
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    Solving Systems by Substitution
    Unit 4 · Lesson 2
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    Solving Systems by Elimination
    Unit 4 · Lesson 3
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    Systems of Linear Inequalities
    Unit 4 · Lesson 4
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    Applications and Word Problems
    Unit 4 · Lesson 5
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    Unit 5

    Linear Inequalities

    Algebra · Linear Inequalities & Absolute Value
    Q34 lessons · 4 worksheets
    Solving Linear Inequalities
    Unit 5 · Lesson 1
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    Compound Inequalities — And / Or
    Unit 5 · Lesson 2
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    Solving and Graphing Inequalities
    Unit 5 · Lesson 3
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    Absolute Value Equations
    Unit 5 · Lesson 4
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    2

    Measurement & Geometry

    Proofs, lines & triangle congruence
    Unit 1

    Logic, Reasoning & Proofs

    Geometry · Logic, Reasoning & Proofs
    Now in Grade 9 · Q22 lessons · 2 worksheets
    Deductive and Inductive Reasoning
    Unit 1 · Lesson 1
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    Axiomatic Structure of a Mathematical System
    Unit 1 · Lesson 2
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    Unit 2

    Parallel & Perpendicular Lines

    Geometry · Parallel & Perpendicular Lines
    Now in Grade 9 · Q1–Q25 lessons · 5 worksheets
    Theorems and Postulates on Parallel and Perpendicular Lines
    Unit 2 · Lesson 1
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    Properties of Parallel Lines Cut by a Transversal
    Unit 2 · Lesson 2
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    Using Properties of Parallel Lines Cut by a Transversal
    Unit 2 · Lesson 3
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    Solving Angle Measures of Intersecting Lines
    Unit 2 · Lesson 4
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    Constructing Parallel and Perpendicular Lines with a Compass
    Unit 2 · Lesson 5
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    Unit 3

    Triangle Congruence

    Geometry · Triangle Congruence
    Now in Grade 9 · Q23 lessons · 3 worksheets
    Constructing Triangles Using a Compass
    Unit 3 · Lesson 1
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    Triangle Congruence — SSS and SAS Postulates
    Unit 3 · Lesson 2
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    Triangle Congruence — AAS and ASA Postulates
    Unit 3 · Lesson 3
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    3

    Data & Probability

    Central tendency & probability
    Unit 1

    Central Tendency & Variability

    Statistics · Representing & Summarizing Data
    Q1 · Q49 lessons · 9 worksheets
    Constructing Dot Plots
    Unit 1 · Lesson 1
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    Frequency Distribution Tables & Histograms
    Unit 1 · Lesson 2
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    Stem-and-Leaf Plots
    Unit 1 · Lesson 3
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    Measures of Center — Mean vs Median
    Unit 1 · Lesson 4
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    Percentile Rank from Raw Data
    Unit 1 · Lesson 5
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    Percentile Rank & the Normal Distribution
    Unit 1 · Lesson 6
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    Finding Area Under the Normal Curve — Z-Table
    Unit 1 · Lesson 7
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    Quartiles and Box-and-Whisker Plots
    Unit 1 · Lesson 8
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    Standard Deviation & Sigma Notation
    Unit 1 · Lesson 9
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    Unit 2

    Basic Probability

    Statistics · Probability
    Q410 lessons · 10 worksheets
    Introduction to Probability — Sample Spaces
    Unit 2 · Lesson 1
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    Probability Rules — Events
    Unit 2 · Lesson 2
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    Classical Probability
    Unit 2 · Lesson 3
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    Independent vs Dependent Events
    Unit 2 · Lesson 4
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    Probability Models
    Unit 2 · Lesson 5
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    Two-Way Tables & Venn Diagrams
    Unit 2 · Lesson 6
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    Two-Way Tables, Venn Diagrams & Tree Diagrams
    Unit 2 · Lesson 7
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    Conditional Probability
    Unit 2 · Lesson 8
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    Conditional Probability — Using Tables
    Unit 2 · Lesson 9
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    Combinations & Counting Methods
    Unit 2 · Lesson 10
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    All Mathematics 8 Worksheets54 free worksheets

    Browse every worksheet for Mathematics 8 as a full page — each with a worked video lesson in English & Filipino, a printable PDF, and an answer key. (The video and download buttons above still work exactly as before.)

    Measurement & Geometry

    Logic, Reasoning & Proofs