Students will measure the circumference and diameter of a variety of different circles. They will graph the class' values of (d,c) on the coordinate plane and use linear regression to approximate pi.

In this activity students will contribute a set of random points to a graph of a circle of radius 1 inscribed in a square. They will estimate the area of the circle using geometric probability.

In this online lesson plan, learners will survey students in their school to determine their favorite type of hand-held ice cream. Before performing the survey, learners will make predictions about which ice creams they think will be the...