The reason behind the colored backgrounds: Green are all of the consonants. Red are all of the vowels. Yellow are “copy cat” letters (make hard and soft sounds) and the Y is sometimes a vowel and sometimes a consonant so it is split into red and green.
This alphabet would go great with a themed classroom or just to BUILD a little fun into your students learning. I also have one in my toy room for my little ones at home and they love it!