Amazon.com description: Product Description: Help your second graders master key math skills, and provide differentiated math practice through fun, hands-on activities in these 12 centers. Each full-color center focuses on a skill from a Common Core State Standards math domain, such as numbers and counting, operations, measurement and data, and geometry. The easy-to-assemble centers are stored in pocket folders, making them easy to use at a table, desk, or quiet area in the classroom. After a teacher or classroom aide models how to use a center, students can complete the activity independently, in pairs, or with the teacher, who may use the task to informally assess a students understanding. Each of the 12 centers includes: full-color center mats and task cards, an overview with lesson objectives, a student direction page that explains the center activity, a response form or written practice activity, and a center checklist to record each students progress. Take It to Your Seat: Common Core Math Centers has been updated to address the new advanced standards and provides: an increase in the variety and complexity of activities to practice each skill in alignment with Common Core State Standards. Leveled tasks within some centers so that tasks progress in difficulty from level 1 to level 2. An illustrated math concept or rule for every center to support visual learners and keep the focus on the targeted math concept or skill. The 12 centers cover the following second grade math skills: Numbers and Counting, Operations, Measurement and Data, and Geometry.