Uses 15 units to teach 150 words that fourth and fifth grade students should know for reading, writing, and standardized tests. Each unit covers 10 words and includes a story involving elementary school students that introduces language arts concepts such as homonyms, homophones, homographs, key words, antonyms, hyperbole, fables, myths, folk tales, and speech writing. Additional stories focus on the branches of government and the Constitution, scientific method and formulating a hypothesis, and the Revolutionary War. Each unit contains definitions, pronunciation keys, parts of speech, and alternate choices for each word made up of synonyms, idioms, and/or phrases. Students complete a variety of exercises requiring critical reading and writing skills to contextualize the words. The exercises deliberately use other forms of the words as different parts of speech, so that students learn to recognize these forms as variations of the original words, further expanding their vocabulary and enabling them to use the words in more contexts. The correct spelling of vocabulary words is emphasized with the jumble activity that asks students to unscramble the word before writing the correct spelling. 176 pages, grades 4-5.