The last couple days our kiddos have been using a plastic baby carrier as a ramp for Hot Wheels cars. They have been varying the depth of the incline to vary the speed and distance traveled. For the most part, they have done all this on their own. They are also realizing that different cars travel differently.
I have asked a few open ended questions - like "Why does one car go faster/farther than another on the same ramp?" And "Why does the same car go differently when you change the ramp?" They aren't quite able to articulate the reasons, but they have observed the differences.
