Meet our latest creation: Jumblez Puzzle Sets - Uppercase, Lowercase and Numbers. Each large 10cm x 10cm (4in. x 4in.) puzzle piece is made from lightweight 2mm thick coloured translucent acrylic. Every puzzle piece has a clear acrylic shape of the letter or number/maths symbols in the centre, and comes with a black whiteboard marker and eraser. Spell a word, practice your handwriting and then explore light and colour with the bright translucent pieces when used on any light table. Perhaps on our LightPad, which we have designed all 28 pieces to fit perfectly on :) The unique tessellated shape allows any piece to fit with any other piece, side by side or top to bottom. Write your name, teach your child the first words, or learn what "1+2=" in a fun, colourful way. Each pack comes with 28 pieces in four translucent colours, a fabric drawstring carry bag to store them in, whiteboard marker and eraser.