Lesson Notes By Weeks and Term v4 - SHS 2
REAL NUMBER AND NUMERATION SYSTEM
Download the Lessonotes Mobile Ghana app for faster lesson access on Android and iPhone.
REAL NUMBER AND NUMERATION SYSTEM
Download the Lessonotes Mobile Ghana app for faster lesson access on Android and iPhone.
Subject: Mathematics
Class: SHS 2
Term: 1st Term
Week: 2
Grade code: 2.1.1.LI.2
Strand code: 1
Sub-strand code: 1
Content standard code: 2.1.1.CS.12
Indicator code: 2.1.1.LI.2
Theme: NUMBERS FOR EVERYDAY LIFE
Subtheme: REAL NUMBER AND NUMERATION SYSTEM
This page supports the lesson note with a companion video and a short classroom-ready summary.
For class groups and homework, share this lesson page so learners also get the summary, objectives, and full lesson context.
This lesson introduces two powerful mathematical concepts: indices and logarithms. Indices provide a shorthand way to write and work with repeated multiplication. This is incredibly useful in many areas of life in Ghana and beyond – from calculating compound interest on a mobile money savings pot (like MTN's Y'ello Save) or a bank loan, to understanding population growth in our communities, and even how digital memory is measured in the phones we use every day. Logarithms are the "opposite" or inverse of indices, helping us to solve for unknown powers. Mastering these concepts is fundamental for further studies in mathematics, science, engineering, and finance.
This section is divided into two parts: A) The Concept of Indices and Their Laws, and B) The Concept of Logarithms. A. The Concept of Indices and Their Laws
What is an Index?
An index (plural: indices) is a number that tells us how many times to multiply a base number by itself.
In the expression aⁿ: a is the base (the number being multiplied). n is the index, also called the exponent or power.