Several of our older kids are working through this book over their summer break. I like the way it is organized. Students are given five new words to learn each day and two or three short exercises to help them do so. A cumulative review every Friday serves to cement the definitions into their long-term memory. This consumeable workbook includes 46 weeks worth of activities, all of which can be completed in about 15 minutes a day.
1100 Words You Need to Know