Mathopolis Question of the Day
Students can discuss different problems and solutions with each other. The question changes daily. After students state their answers click the "help link" to reveal the answer and an explanation of the answer. This site has problems for grades 3-12. Below is a screenshot of a 5th grade problem.
The puzzles on this site are definitely brain teasers and a lot of fun! Students have to find sets using the shapes, colors, and numbers of different objects. There is a short tutorial to learn how to play. These puzzles are tricky! I only figured out 4 sets out of 6 on today's puzzle. Below is a screenshot.
First you choose your grade level (grades 1-8). Once students answer the question you can submit the class answer. Below shows a screenshot of today's question and the answer which is explained once you submit your answer. You can add your email address to have the question emailed to you daily.