The National Science Foundation (NSF) is an organization that helps to fund research in science, math, engineering, and technology in the United States. It works by giving money to universities and other organizations to help fund new projects. These projects help us learn more about the world, study new ways of doing things, and make new inventions or discoveries. The NSF also encourages science education in the United States. They help support colleges and universities by providing them with money to pay for their research and by offering grants to students who are interested in science or math.