Children select a work card and add the missing wooden bead(s) to complete the sequence on the work card. They then turn over the card to check the answer. The work cards are colour-coded across 3 levels of difficulty with 1-2 spaces to fill. Green (Level 1) contains 6 spaces and 1 bead space to fill, with 2 shapes and 2 colours used. Yellow (Level 2) contains 8 spaces and 1 bead space to fill, with 3 shapes and 3 colours used. Red (Level 3) contains 8 spaces and 2 bead spaces to fill, with up to 4 shapes and 4 colours used. Beads manufactured from sustainably sourced solid wood (schima superba). Square measures 3x3cm. Clean the beads with a dry or slightly damp cloth with mild soap or detergent and then wipe dry.