This abacus features a unique reset function, making it convenient for repeated use during math exercises. The 15 rods and 7 beads configuration is for teaching children of bead arithmetic. By sliding the beads , students can practice addition, subtraction, multiplication, and division, enhancing their mathematical proficiency and confidence. Features -Color:Black -Material:Plastic -Size:27.00X11.00X2.00cm/10.61X4.32X0.79in -Convenient onekey reset: the abacus a onekey reset feature, allowing for quick and of calculations, enhancing efficiency during learning sessions -Childfriendly design: featuring 15 rods and 7 beads per rod, this abacus is tailored for children's use, making learning math fun and engaging -Mental arithmetic : designed as a tool for mental arithmetic, this abacus helps children improve their calculation skills and mathematical thinking -plastic construction: crafted with meticulous attention to detail, this abacus is built to last, providing a reliable tool for continuous educational use -Beginnerfriendly: its straightforward design ensures that even beginners can quickly learn how to use the abacus, making it an excellent starting point for young learners Package list: 1 x abacus