Are you a visual learner? If you took a big scoop of soil and hand sorted every little crumb into different categories, what would you find? Among many other things, you would probably have separate piles of sand, silt, and clay. The relative size of each pile of sand, silt, and clay would help determine the type of soil you have. The Nitty Gritty is a nifty tool that helps you determine the type of soil you have and lets you skip the hand sorting!