Angles and Protractor: Estimate, Compare, and Build
Estimate angles by eye, compare them, measure them with a protractor, and build target angles.
Unit Circle: sin and cos
Rotate the angle on the unit circle and see how cos(θ) and sin(θ) become point coordinates and moving points on the sin(x) and cos(x) graphs.
All Simulations
Buffon’s Needle: how randomness helps estimate π
Advanced probability simulation of Buffon’s needle experiment: throw random needles onto parallel lines, watch crossings accumulate, and see how tosses divided by crossings approaches π.
Coordinates: Points, Symmetry, Transformations
Plot points, reflect shapes, and test transformations on the coordinate plane.