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All 9 lessons in Simple Equations & Variation

  1. 1. Equations as Balances

    Explain what an equation represents using the balance model and solve linear equations.

  2. 2. Change of Subject of a Formula

    Identify the subject of any given formula and make a specified variable the subject using inverse operations.

  3. 3. Change of Subject — Formulae with Powers and Roots

    Identify when a target variable is trapped inside a root or power, and use inverse operations to rearrange compound formulae.

  4. 4. Change of Subject — Complex Formulae

    Apply the five-step protocol to isolate variables appearing in multiple terms and rearrange complex compound formulae.

  5. 5. Direct Variation — When Two Quantities Rise and Fall Together

    Translate direct variation statements into proportionality equations and apply the three-step algorithm to find constants and solve for unknowns.

  6. 6. Joint, Combined, and Chained Variation

    Write and solve variation equations where multiple quantities interact simultaneously through joint, combined, and chained relationships.

  7. 7. Partial Variation

    Write partial variation formulas, solve for two constants using simultaneous equations, and interpret the graphical meaning of the constant term.

  8. 8. JAMB & WAEC Level Practice: Mixed Examination Questions

    Diagnose variation problem types from text, avoid common examination pitfalls, and fluently apply the collect-factor-divide protocol under mixed conditions.

  9. 9. Variation in Real Life — Applications & Contextual Graphs

    Translate real-world language into variation formulas, solve multi-step applied problems, and connect all four variation types to their graphical representations.

Unit code SSA1