I found excellent resources for looking at motion, specifically speed, time and distance. I will be using basic Lego robotics setup (the green kit) and then the Robotics Educator CD that has 10 Investigations about gears and ratios. I've never used this CD but the Video Trainer is awesome. Especially if you've *wrastled* with Robolab's tutorial system. My students just zipped through the tutorials and never really spent enough time thinking about what they were doing. The Video Trainer makes them slow down, presents information in small enough chunks that they can actually process it and the programming aspects of Robolab begin to sink it.

The gears lessons will help students gain insight as to how different gears effect the distance traveled. What a perfect connection to fractions!!!! Then as we discuss distance and time, they will learn how math explains this relationship using ratios. What a better way could there be than through experimenting with different gears a student figures out how a ratio really helps explain what they know.

At a minimum, this gear set of lessons should help the kids learn about independent and dependent variables. Making a testable question and then carrying out an experiment to see what holds up.

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