Teachers in the 21st century must implement professional development in classroom management, new teaching strategies and learning theories. They must also share resources and collaborate using technology like blogs, wikis and social networking sites. Teachers help students develop critical thinking, collaboration, media literacy and creativity skills by having them use computers, tablets, cell phones and more to create and share assignments. The goal is to prepare students to meet standards like Common Core and NST-S through implementing new curriculums across subjects like math, social studies, English and science.