Concrete slab

A concrete slab is like a giant pancake made of rocks and cement. It is usually flat and sits on top of the ground. The rocks and cement get mixed up together and then poured onto a special foundation, kind of like a plate. Once it's poured, people use special tools to smooth it out and make it even. After a few days, the cement dries and becomes super hard, like a rock. Then people can walk or drive on it without it breaking or cracking. Often times, buildings or houses are built on top of a concrete slab to make sure they stay nice and sturdy.