An introduction about what is science, the different branches of science, and what is a hypothesis. I used this for my homeschool daughter, who loves it. We ended with the Diet Coke and Mentos experiment. We didn't just use Diet Coke. We did Diet Coke vs. Regular Coke; Diet Coke vs. Sprite; Diet Coke vs. Crush; and Diet Coke vs. Root Beer.
The cards for the different branches of science, I printed out, double-sided then laminated so she could take them out of the pocket. We made it into a game.