Dancing Raisins Experiment Pt. 1

For part 1 of this experiment, the students had to observe what happens to raisins when they are placed in a cup of 7- Up.  They needed to make quantitative observations like how many times the raisins came to the surface, and qualitative such as most of their raisins came to the surface.  The students then had to create an inference to explain how the raisins were able to move up to the surface and back down to the bottom of the glass.  The students next, had to decide which question to investigate, does the type of pop make a difference in how well the raisins rise and fall. or does the number of raisins affect how active the raisins are?  Depending on which variable they change (the type of pop or the number of raisins), that will be their independent variable.  The dependent variable will be how often or well the raisins rise and fall.  The constant variable will be the one variable they did not change throughout the lab.  We'll have more pictures tomorrow to show you how this went for them!