Do you have a couple of toy trucks, a piece of sturdy cardboard, books, and some paperclips or metal washers? Your students can roll trucks down the cardboard ramp as they become scientists, recording data, testing their guesses, changing a variable, making a simple graph, and then analyzing their data. What makes a truck roll the farthest from the end of the ramp??To make it easy to present the activities, I've included 9 Word™ documents, 26 audio recordings, 2 PowerPoint™ presentations: • A