Learn Physics
Motion, energy, forces, and the laws of nature. A free, structured curriculum: 5 units · 20 lessons · self-paced.
Curriculum outline
Unit 1: Theory of Physics
Lesson 1.1: What Is Physics: Definitions and Scope
Lesson 1.2: Foundational Principles and Axioms
Lesson 1.3: Key Theorems and Laws
Lesson 1.4: How the Theory Was Developed
Unit 2: Core Methods and Approaches
Lesson 2.1: Standard Methods and When to Use Them
Lesson 2.2: Step-by-Step Problem-Solving Process
Lesson 2.3: Tools and Notation
Lesson 2.4: Choosing the Right Approach
Unit 3: Guided Practice
Lesson 3.1: Worked Examples: Simple Problems
Lesson 3.2: Worked Examples: Moderate Complexity
Lesson 3.3: Independent Practice Set
Lesson 3.4: Checking Your Work and Self-Assessment
Unit 4: Advanced Methods
Lesson 4.1: Advanced Techniques and Shortcuts
Lesson 4.2: Multi-Step and Compound Problems
Lesson 4.3: Proof-Based and Analytical Thinking
Lesson 4.4: Connecting Methods Across Topics
Unit 5: Applied Physics
Lesson 5.1: Physics in Real-World Contexts
Lesson 5.2: Modeling and Estimation
Lesson 5.3: Data Interpretation and Analysis
Lesson 5.4: Cross-Disciplinary Applications
Sample lesson preview
What Is Physics: Definitions and Scope
Understand what Physics is and why it matters.
Physics is best understood through its purpose: what problem does it solve, or what need does it address? Rather than starting with a textbook definition, think about when and why people encounter Physics in real life. Understanding the "why" first makes the technical details much easier to grasp. The simplest test of understanding: can you explain it in one sentence to someone who's never heard of it?