Geometric Progression (GP) — Complete Starter Course

Course Overview

The Geometric Progression (GP) — Complete Starter Course gives learners a clear, exam-focused mastery of geometric sequences and series—from identifying a GP and finding the common ratio, to calculating the nth term, the sum of a finite GP, and the sum to infinity where applicable. This course is designed for IGCSE and O Level Mathematics learners who want strong concept clarity, fast recall of formulas, and the ability to solve both structured and word-based exam questions confidently.

Using rich explanations, multiple worked examples, exam tips, mnemonics, interactive quizzes, and high-quality LearnStalk explainer videos, learners will build mark-scheme-ready methods—including clean substitutions, correct handling of indices, and smart sanity checks that prevent lost marks. Whether you’re revising for mocks, preparing for finals, or strengthening your algebra foundation for advanced topics, this course guides you step by step from GP basics to exam-level problem solving.

What You Will Learn

• Identify a geometric progression, find the common ratio r, and distinguish GP from AP using exam-style checks.
• Use the key GP formula T_n = arⁿ⁻¹ to find specific terms and write the rule for the nth term accurately.
• Calculate the sum of a finite GP using S_n formulas and avoid common index and sign mistakes in exams.
• Master infinite GP, apply the convergence rule |r| < 1, and use S_∞ = a/(1 − r) correctly when the sum to infinity exists.
• Solve real-life GP problems involving percentage growth, depreciation, repeated discounts, and bouncing-ball distance using the correct GP model.
• Develop exam-ready problem solving: find a, r, or n from given conditions, handle negative and fractional ratios, and combine T_n and S_n questions efficiently.

Why This Course Matters
Many learners lose easy marks on GP because they memorize formulas but confuse rⁿ vs rⁿ⁻¹, mishandle negative ratios, or apply the sum to infinity formula when the series actually diverges. In IGCSE/O Level exams, GP questions are often designed to test method and reasoning—choosing the right formula, setting up correct substitutions, and showing working clearly. This course solves that problem by building a strong GP decision system: how to identify the question type, select the right formula fast, and deliver clean, examiner-friendly solutions.

Course Features

• High-quality LearnStalk explainer videos aligned to IGCSE/O Level outcomes
• Interactive quizzes and exam-style MCQs to strengthen speed and accuracy
• Rich concept explanations with multiple worked examples and mark-scheme method steps
• Exam tips and common-error warnings (indices, signs, divergence traps)
• Audio recaps for quick revision and reinforcement
• Flashcards for rapid recall of formulas, conditions, and exam shortcuts
• Discussion prompts to clear misconceptions and sharpen exam technique

Who Is This Course For?

• IGCSE and O Level learners aiming for strong grades through clear understanding and consistent exam practice.
• Students who struggle with indices, ratio-based sequences, and choosing the correct GP formula under time pressure.
• Learners who want a revision-friendly course with quizzes, flashcards, and audio recaps.
• Any student preparing for mocks, finals, or moving into advanced algebra and sequences/series topics.

Course Price
$11 – Full Access