Add the missing bead(s) to the number sequence cards to complete the sequence, threading the beads onto the laces.Contains 12 double-sided workcards across 3 levels:Green (level 1 - missing 1 number), Yellow (Level 2 - missing 2 numbers), Red (Level 3 - missing 3 numbers).Number sequences help children to practise growing patterns of 1, 2, 3, 4, 5, 6 and 10.Includes 121 beads in blue, orange, green, red and yellow.Contains 1 each of beads 0, 21-100 and 2 each of beads 1-20.Beads are 2.5cm square.Every 5th bead is blue (20, 25, 30 etc).Every 6th bead is orange (21, 26, 31 etc).Contains enough beads to complete all the cards of any single level.Includes 8 x 30cm laces.