A good exercise is to make marks in soil (in this case sand), at certain intervals of time. Then come back and watch how the marks or footprints degrade over time.

Do this a few times and you're well on the way to being able to properly age tracks.

How old is each track?

Here are the same footprints, later.

You can see that they have changed quite a bit in the time that passed between the two photos.

Care to guess how much time elapsed between the two photos?

This is a pic from the old days when I spent all my time tracking.

Here I spent days with this ant hill, learning the secrets of it building!

It's never too late or too soon to teach your children to track...

Here are my twins learning some skills ... learning to track, the only way I know to show them.

Here they follow a "what?"

Aging Compressions Techniques Measurements