Our edx education® Student 1-20 Beadstring is the perfect visual aid to make learning maths fun. A tactile way for your child to learn to count, play mathematical games, and understand addition and subtraction. The red and white beads can be alternated in numerical groups to help children picture multiples, forming the basis of multiplication concepts. A great tool for hands on learning.. Beads have a 10mm diameter.. Set includes: Each string has 20 beads, in groups of 5 red beads and 5 white beads. 10 strings in the set.. Size LxWxH: 17cm x 15cm x 4cm. Age: 4yrs+. MPN: EDX40902