This is a TI-84 activity that uses Mathematical Modeling and Climate Change data. Here is where you can get the data for a TI-84 or TI-84 CE: BURNFOSS program.   You can get the student sheet here: Fossil Fuel and Carbon Student and the teacher notes and solutions here: Fossil Fuel and Carbon Teacher. Or you can get all 3 files in a zip folder here:  Fossil Fuel and Carbon ALL Files .

Here is the student pdf:

fossil_fuel_s_1

fossil_fuel_s_2

fossil_fuel_s_3

Here is the teacher pdf:

Fossil_Fuel_T_1.JPG

Fossil_Fuel_T_2.JPG

fossil_fuel_t_3