This website provides challenges where students have to replicate specific 2D images on a 3D platform. For the spatially challenged, such as myself, this is not as simple of a task as it first seems! I particularly love this site because it easily lends itself to small-group collaboration, trial and error discussions and problem solving -- all skills for our 21st century learners. Put it on the SMART Board, and work through together as a class, or make the SMART Board a 'center' with this one Geometry activity for one group of 3-5 students to tackle, while other small groups work on additional geometry challenges around the room (traditional pen and paper Math problems, building 3D models, etc.)
MathMovesU is an interactive virtual world where middle school students can interact with algebra, geometry, decimals, fractions, and word problems through topics they are passionate about like sports, music, and fashion. As students navigate through MathMovesU they will encounter math problems delivered through games, polls, and fun facts. The site is a great supplement to curriculum and will help students practice and improve their math skills in a fun, engaging manner.