""I..." Hermione's mind went blank for a moment. She loved tests but she'd never had a test like this before. Frantically, she tried to cast back for anything she'd read about what scientists were supposed to do. Her mind skipped gears, ground against itself, and spat back the instructions for doing a science investigation project:Step 1: Form a hypothesis. Step 2: Do an experiment to test your hypothesis. Step 3: Measure the results. Step 4: Make a cardboard poster."