It is surprising just how many "fossil" trackways are in every community. Dogs, cats, birds, and even people often make a leave trackways excellent trackways in cement. If you look around your school and neighborhood you will most likely find a few trackways left in cement. I often find trackways left by birds and pets that were made while the sidewalk cement was still wet.
To get some dinosaur tracking practice, start by taking a walk around the school or in your neighborhood and try to find some of these cement trackways. Once you find one you can use that section of the sidewalk trackway to calculate the speed of the animal as it walked across the wet cement. To do this activity you will need a measuring tape, some sidewalk chalk, and a notebook to record your measurement. If you have one, a digital camera can also be a great tool.
In the picture to the left, while skating, I found a trackway made by a duck as it walked across the sidewalk on the way to a pond. The picture on the right was made by a smaller bird (notice the dime that was used for scale).
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