

Topic: Number and Algebra
Level: IB Mathematics: Analysis and Approaches (HL)
File Type: Editable Slides / Worksheet
Overview
This resource extends students’ understanding of logarithmic properties and their relationship to exponents.
Students will explore the fundamental laws of logarithms, learn how to derive these relationships, and apply them to solve logarithmic and exponential equations.
The lesson provides both conceptual explanation and practical application, emphasizing the connection between algebraic manipulation and the structure of logarithmic expressions.
Learning Objectives
By the end of this lesson, students will be able to:
- State and apply the laws of logarithms in simplifying expressions.
- Derive logarithmic laws from the corresponding laws of exponents.
- Solve logarithmic and exponential equations using algebraic reasoning.
- Identify when logarithmic expressions are undefined based on domain restrictions.
- Use logarithmic rules to evaluate and simplify complex expressions efficiently.
What’s Included
- Summary table of the Laws of Logarithms with equations and corresponding names.
- Step-by-step derivations explaining the logic behind each property.
- Practice problems requiring students to apply the laws of logarithms to simplify or solve equations.
- Worked solutions emphasizing correct domain restrictions (e.g., when logarithms are undefined).
- Additional “Properties of Logs” examples that illustrate key concepts such as product, quotient, and power laws.
Topics Covered
- Definition and properties of logarithmic functions.
- Laws of logarithms: product, quotient, and power rules.
- Connection between exponential and logarithmic equations.
- Derivation of logarithmic properties from exponent laws.
- Solving equations involving logarithmic expressions.
- Domain and range considerations for logarithmic functions.
Why You’ll Love It
- Builds directly on prior knowledge of exponents and logarithms from the SL course.
- Encourages conceptual understanding through derivation, not just memorization.
- Includes problem-solving tasks suitable for IB HL-level rigor.
- Visually organized and ready for classroom instruction or digital teaching.
- Aligned with the IB Math HL syllabus and designed for both teaching and review.
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