Skill Sharpeners It has been proven that children benefit immensely when parents take an active role in their education. Skill Sharpeners Spell & Write provides grade-specific practice designed to keep written language skills sharp. Skill Sharpeners Spell & Write, PreK contains 26 units, one for each letter of the alphabet. Each unit includes an alphabet story and three activity pages to help students identify and write the capital and lowercase letter presented. The unit ends with a Test Your Skills assessment page, where answers are presented in a fill-in-the-bubble test format.