Description LER0930 Liven up learning as you help students understand abstract base ten concepts, including place value, estimation, operations, fractions, and more. Units in vibrant, bold colors are made of durable plastic. Set includes 100 units, 30 rods, 10 flats, 1 cube, and Base Ten book (LER 4296). For 3-4 students. Grades 1 Ages 6
