Introduction to Algebra | Variables, Expressions, Exponents & Order of Operations Explained

Learn the language of algebra with clear, step-by-step explanations and real-world examples.

🔗 Watch our full pre-algebra playlist:    • Pre-algebra  

By the end of this section, you will be able to:
Use variables and algebraic symbols
Identify expressions and equations
Simplify expressions with exponents
Simplify expressions using the order of operations

These lessons are perfect for Year 7 – Year 9 students, teachers, or anyone revising foundational algebra skills. Follow along to strengthen your understanding of algebraic concepts and how to apply them in problem-solving.

🕒 Chapters

00:00 Intro
00:39 What are variables
03:53 Algebraic symbols
05:28 Translating from algebra to words
06:12 Equality and inequality
10:18 Translate between algebraic notation and words with examples
16:02 Grouping symbols
17:13 Expressions vs equations with examples
19:33 Simplifying expressions including with exponents
22:24 Exponential notation
23:41 Converting between expanded and exponential form
27:25 Simplifying using order of operations with examples
30:45 Outro

📘 Source:
Marecek, Lynn; Anthony-Smith, MaryAnne; Mathis, Andrea Honeycutt. Prealgebra 2e. OpenStax, Houston, Texas, 11 Mar 2020.
Available at: https://openstax.org/books/prealgebra...

Section reference: https://openstax.org/books/prealgebra...

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