Create colorful place value charts on your whiteboard--or hand your students the disks for hands-on practice on lap boards! Color-coded by place value (millions, hundred thousands, ten thousands, thousands, hundreds, tens, and ones). Essential tool for all math series, especially the popular Asian math programs on the market! Lap boards sold separately. Grades 3-6 set includes 140 disks (20 each of 7 places: millions, hundred thousands, ten thousands, thousands, hundreds, tens, and ones) plus 7 headings. Disks measure 1"D. Headings measure 6"W x 2"H.