Consonants and Vowels. Introduction to English Grammar. Forms of Punctuation. Excellent quality poster printed on durable on 300gram board which wipes clean with only one wipe. These charts & posters can be rolled and will immediately return to their original state once unrolled. All posters measure 60cm by 40cm which means that they are the ideal size for display in many formats : on the classroom/bedroom wall, fridge doors or used on a desk.