A great resource for vocabulary instruction- 100 Words Every Middle Schooler Should Know by American Heritage Dictionaries. In my classroom we use it as a challenge. I introduce a word a day and every 10 words there is a quiz. Each word has the definition, part of speech, and a sentence.
An entire year of vocabulary instruction.
These are PDFs of the powerpoints and quizzes. They are uneditable.
There is an editable version.
Also available are word wall cards.