Constructivism is a way of thinking about how we understand the world around us. It says that, instead of us just learning facts and information from the environment, we actually construct our own understanding and meaning by actively exploring, testing, and creating our own ideas. For example, if you were to learn how a lightbulb works, you would not just be memorizing facts but instead actively exploring, testing, and playing with the lightbulb to figure out how it works.