The document discusses three math lessons on ratios, rates, and proportions used during a flight: 1) Ratios are used to determine the plane's weight to lift and thrust to drag ratios for takeoff. 2) The rate of the flight is 7.32 miles per minute over 4360 miles, taking approximately 9 hours and 56 minutes. 3) Proportions compare the slightly larger 767-300 plane model to the 767-200 with different length ratios.