Hula Hoop: Geometric Demonstration of Circles, Translation, and Riemann Sums

This applet uses a hula hoop model to demonstrate circles, translation, perimeter, and Riemann sums. By constructing intersections of circles and lines, and using triangle properties, it explores circumference calculation and its link to Riemann sums. Translational transformations dynamically visualize curve partitioning, helping learners grasp the core idea of Riemann sums in calculus.