Explore the intricacies of pendulum motion in this 27-minute video that challenges the simple harmonic motion approximation. Dive into the Euler-Cromer Method for more accurate simulations, and witness how small initial amplitudes can quickly deviate from simplified models. Learn to code a pendulum simulation using VPython, with the full source code available for download. Investigate the effects of changing pendulum length and breaking the small angle approximation. Create a reference line for comparison and discover next steps for further exploration. Join the online community to discuss physics concepts and coding techniques.