Learning Resources Giant Magnetic Base Ten Demonstration Set. Demonstrate a variety of primary maths skills with this Giant Magnetic Base Ten Demonstration Set! Ideal for reinforcing place value, fractions, decimals, estimation, arithmetic and percentages, this front-of-class magnetic set enables students to visualise mathematical concepts with ease. Features real life photography for 3-D visualisation. Includes 131 blue base ten pieces – 100 units, 20 rods, 10 flats, one cube. Flats measure 17cm. Units measure 1.5cm.