Always study with the most up-to-date prep! Look for Barron's The Easy Way , Sixth Edition, ISBN 9781438012131, on sale September 3, 2019.
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Douglas Downing is Professor Emeritus of Economics at Seattle Pacific University, where he taught from 1983 to 2018. He holds a BS and a PhD in economics from Yale University. At SPU, he taught economics, quantitative methods, astronomy, and globalization. Dr. Downing also served in various leadership roles and authored 15 books, including a trilogy of math adventure novels. His 2015 book, Freedom, Opportunity, and Security, explores the relationship between economic policy and the political system.
This is an excellent supplement to Algebra I courses and also includes many if not most Algebra II topics. It teaches algebra through a fantasy story about a kingdom. The plot is obviously contrived to teach the various topics, but it's still a lot of fun. The characters are likable and great fun. I especially liked how Recordis the royal scribe fainted any time imaginary numbers were mentioned.
We didn't realize it was supposed to be a supplement nor that it covered both Algebra I and II, so my homeschooled son used it as his math text for one year. It worked well for him, but he's naturally good at math.
It's also a great supplement for students who struggle with math. I lent a copy to a girl who was totally mystified by graphing and she finally got it - the illustration of using a map grid to guide a helicopter pilot made the Cartesian coordinate plane make sense to her for the first time.