Open Middle is a terrific resource to find challenging math problems for all grade levels. The problems on this site offer multiple options for finding the solution. Many initially appear to be easy; however, they become more complex as they are solved. Use links at the top of the page to find problems by grade level and concept or use filters to browse by Common Core Standards. Each question includes a hint when necessary and answers.
tag(s): logic (250), problem solving (296), statistics (129)
In the Classroom
Bookmark this site to find math problems correlating to your teaching standards or content. This site is perfect for finding materials to differentiate instruction with different student ability levels. Have students share their results and discuss their problem-solving process on your interactive whiteboard. Take screenshots of the different solutions and include on your class website. Another option is to take a picture of student's written solutions, then use ThingLink, reviewed here, to extend student learning by having them add an audio recording describing their mathematical thinking. Share their ThingLink images on your website, or add to your student's digital portfolio on Seesaw, reviewed here, or another portfolio creation site. As students become more proficient in sharing their mathematical thinking and problem-solving activities, consider using their math talks as part of an ongoing podcast using Buzzsprout, reviewed here, as a way to extend student learning and promote math conversations and help students understand that there may be many different ways to arrive at the right answer to a problem. Buzzsprout features free and easy to use tools including the ability to create and schedule podcasts to be released on any date and time you desire.