This versatile teaching tool presents the hundred chart in a format that aligns with new Common Core State Standards, providing a host of activities to help students understand place value.?Magnetic strips of tens can be built up into a hundred board to meet the specific needs of the lesson. Blank magnetic pieces are included to cover up numbers for use with skip counting, identifying hidden numbers and addition and subtraction activities.?Tens strips build numbers from 0-110. Includes teaching guide with suggested activities, 11 tens strips, each 2 1/2 x 24 inches, and 20 blank magnetic cover ups.