Barrier methods of birth control physically block sperm from reaching the uterus during sexual activity. There are many types to choose from. Weigh up the pros and cons of each before deciding which ...

Teaching methods are the broader techniques used to help students achieve learning outcomes, while activities are the different ways of implementing these methods. Teaching methods help students: ...

Pew Research Center is committed to meeting the highest methodological standards — and to exploring the newest frontiers of research. Learn more about the methods the Center uses to conduct objective, ...

Here at Pew Research Center, we are often asked about how we conduct our research. We work hard to make our methodologies transparent and understandable, but we also know that survey mode effects and ...