Grade 12 Business Studies Term 2 Week 7: Investment and Securities – Simple vs Compound Interest

Your Week Ahead

This week your Grade 12 Business Studies class dives into one of the most practically useful topics in the entire CAPS FET programme: investment and securities. Learners will unpack four key investment concepts, get to grips with the difference between simple and compound interest, and work through calculations that directly mirror what appears in the NSC exam. It is a topic that rewards careful, step-by-step teaching because the maths is straightforward once learners understand the underlying logic.

In the curriculum sequence, this section sits within the broader Investment unit and builds on the financial literacy work done in earlier grades. Learners should already have a basic sense of what saving and investing mean, and they should be comfortable working with percentages. If your class is a little shaky on percentages, a quick five-minute warm-up on Day 1 will save you time later in the week. The goal by Friday is for learners to not only calculate simple and compound interest accurately but also to use those calculations to justify a recommendation, which is a higher-order skill that the examiners love to test.

What makes this week particularly satisfying to teach is the real-world relevance. Many of your learners are at the age where they are starting to think about their first bank accounts, bursaries, or part-time earnings. Connecting the maths to genuine financial decisions makes the content stick and keeps engagement high. Keep your examples grounded in rand amounts that feel real to a South African teenager.

This Week’s Lesson Plan

Day 1: Introduce and unpack the four key investment concepts (such as principal, interest, return, and risk), using clear definitions and relatable South African examples to build a solid conceptual foundation.

Day 2: Explain the difference between simple and compound interest, using side-by-side comparisons and worked examples so learners can see exactly how and why the two methods produce different outcomes over time.

Day 3: Work through a range of simple and compound interest calculations, starting with guided practice and moving to independent problem-solving so learners build confidence with the formulas.

Day 4: Apply the calculations to investment recommendations, where learners analyse different investment scenarios and use their results to justify which type or form of investment would be most suitable, preparing them for exam-style questions.

Download Your Lesson Plan

Download the full 4-day lesson plan as a Word document. Includes detailed activities, differentiation notes, and assessment guidance.

Download Lesson Plan (Word)