Several of the activities below were originally developed for the BOREALIS balloon program by Michelle Larson and Shane Larson. They are reproduced here, compliments of the Montana Space Grant Consortium.

TRACKING THE HARBOR BALLOON When in flight, the HARBOR balloon will transmit Global Positioning Satellite (GPS) signals, which the ground team will receive and use to determine the balloon's position and altitude. The following activities demonstrate how the GPS system is able to determine location and speed. The following activities were originally developed by Michelle Larson and Shane Larson for the BOREALIS balloon program operated by the Montana Space Grant Consortium.
PDF	GPS 1: Follow Me, If You Can! This activity demonstrates how you can locate your position anywhere on Earth if you can simply receive signals from three GPS satellites.
PDF	GPS 2: Catch Me, If You Can! This activity demonstrates how GPS information can be used to not only determine your location, but also the direction and speed you are travelling.

ATMOSPHERIC SCIENCE When in flight, the HARBOR balloon will transmit Global Positioning Satellite (GPS) signals, which the ground team will receive and use to determine the balloon's position and altitude. The following activities demonstrate how the GPS system is able to determine location and speed. The following atmospheric science activities were developed by the Mars Global Surveyor Radio Science Team Education Outreach Program.
Webpage	Intro to Atmospheric Pressure This is a general introduction to Atmospheric Pressure. This page contains links to several related activities. Each of those activities are described separately below.
Webpage	Atmospheric Mass This activity will demonstrate that the air in our atmosphere has mass which is attracted by the force of gravity.
Webpage	Make a Barometer! This activity will give students an opportunity to make their own barometer and to observe changes in the local weather.
Webpage	Exponential Atmosphere This activity will show how the pressure in a typical atmosphere decreases exponentially with altitude, and will allow students to estimate the atmospheric pressure at different altitudes in Earth's atmosphere.
Webpage	Ideal Gases This activity will demonstrate that there is a relationship between the temperature, pressure and volume of gases.
Webpage	Air Temperature and Density This activity will demonstrate that cold air is more dense than warmer air and will be drawn to the bottom of a container by the force of gravity.