This product is a lot of 6 Spark Charts study guides focusing on subjects such as algebra 2, trigonometry, chemistry, and geometry. The study guides are authored by Spark Charts and published by Spark Publishing. They provide in-depth coverage of various subjects in English and are designed to help students prepare for their studies in those areas. The lot includes charts, tables, and explanations to aid in understanding complex concepts in algebra, trigonometry, chemistry, and geometry. It is a valuable resource for students looking to improve their grades and excel in their courses.