(Grades 4-12). Essential Vocabulary. Reading level 3-4. Words They Need To Know! Develop important survival skills with these easy-to-use activities sure to improve vocabulary, spelling and writing ability. Key words are introduced in context and then repeatedly reinforced in motivating exercises that emphasize word pronunciations, definitions, spelling, problem solving and more! So help your students acquire vital life skills with these practical and solidly conceived books. 32 pages.