Off-road motorcycle racing and ATV riding. Gardening and fishing. What do these high-adrenaline and slower-paced pastimes have in common? Each requires soil, and the texture of that soil has an effect on all of them. In the inquiry-based lessons described here, students work both in the field or laboratory and in the classroom to collect soil samples, observe the areas from which the samples were taken, analyze the samples, draw conclusions about their findings, and apply their knowledge of soil activities such as motorcycle racing and fishing. (Contains 5 online resources and 2 figures.)