Heisenberg’s Uncertainty Principle: A First Look at Quantum Mechanics and Its Extensions

Based on the author’s 2024-2025 Middle Years Program Personal Project, the present work introduces Heisenberg’s uncertainty principle. It is a product of secondary research, which opts to render quantum mechanics accessible to high-school students. Emphasis is primarily given to wave-particle duality, the de Broglie Hypothesis, state vectors, wavefunctions, probability density, and the Bohr model.