Junior Learning CVC Word Builder Learning Educational Puzzles are ideal for teaching children consonant vowel consonant patterns. Join pieces together to create a completed CVC word with a matching picture to create a completed educational puzzle. The consonant letters are color coded in blue and the vowel letters are color coded in red. This helps to visually distinguish between whether a letter is a consonant or a vowel and where each letter belongs in the word. Each jigsaw piece is a specific shape and can only be joined in a certain sequence to help a child to self correct their word puzzle.