Medical tests are not always correct. When a doctor and a patient receive the rnresults of a test, what is the probability that the report is correct?

The non-zero digits can be organized into a 3-by-3 array such that each row, rneach column, and each diagonal adds up to the same total. How many solutions rnare there? Find and describe them.

In collaboration with another school north or south of yours, rnuse the method of Eratoshenes to determine the circumference rnof the Earth.

We discuss how to compute the stopping distance of a car traveling at a given speed-- a real life application of a math topic, quadratic equations, and science topics, such as motion, kinetic energy, and work done. We also discuss the idea that while mathematics can be utilized to model real life situations, there is much more to consider, if one wants more refined and appropriate solutions to real life problems.

A method to estimate planar areas for simple or complex shapes is described. The method relies on the use of weighing the area of interest and using proportional constructs.

Demonstrate and calculate the reasons for tidal bulges of water on both hemispheres of Earth, due to the Moon.

Make observations and use available data and simple calculations to correlate observations and data in the characterization of stars. In this activity, students can discover that the positions of stars in the sky illuminates information about the Milky Way galaxy.

Make observations and use available data and simple calculations to correlate observations and data in the characterization of stars. In this activity, the distances to bright stars are calculated. The apparent brightness of these stars is then adjusted for distance to see which stars are intrinsically bright and which only appear bright because of their proximity to Earth.

Make observations and use available data and simple calculations to correlate observations and data in the characterization of stars. In this activity, the distances of bright stars are calculated and their motions, in the plane of the sky and in three dimensions are illuminated.