数の大小や同じ数を、てんびんを使って調べることで、ただ覚えることだけでなく、実際に体感として身に付きます。By checking how big the number is with the balance, you can actually get a sense of the number instead of just memorizing it.5さい以上, 数 Ages 5+, Mathematical skills● Book: (A5, 30 pages) ● Number scale: 130 x 135 x 22 mm (5.1 x 5.3 x 0.9`)113 gBook (paper), Number Scale (PP)W 180 x H 248 mm (7.1 x 9.8`)