This pack contains 10 sheets of grids that each have 25 squares (5x5) marked out with black outlines. The grids are plastic so can be written on with dry wipe pens, sticky hook dots will adhere easily so items like the phonics circles set can be used with them or any resource with a loop dot attached. They can be used as an overlay on your magnetic boards if you wish to use them with magnetic letters, the plastic grids are thin enough to still allow the magnets to attract to the boards. The plastic can be easily cut into strips to create smaller phoneme frames. The size of each grid sheet is 257mm square. We also have a larger grid with 30 squares (6x5) available.