Geometry by Harold R. Jacobs

This is the geometry book I settled on for the kids.

Subtitle: Seeing, Doing, Understanding

Published: my edition in 2003; latest edition in 2017

Genre: math textbook

Length: 727 pages of text and problems, 780 pages total

Summary: This is a typical geometry textbook. Each chapter starts with a description of what will be covered, as well as a piece of art, cartoon, or optical illusion that illustrates the concept covered in the chapter. Each lesson also starts with a picture. For each lesson, the topic is discussed, often with illustrations or proofs of the postulates or theorums provided. There are three sets of exercises for each lesson. Set I includes your easiest questions that follow closely the information provided in the lesson. Set II exercises expand on the concepts and require a bit more conceptual thinking to apply the information learned. Set III questions are trickier and often require the creation and manipulation of paper shapes in order to solve. Each chapter also starts with an algebraic review, and ends with a chapter review.

Final thoughts: I like the approach of this book, mainly because it takes pains to show how geometrical concepts are used and displayed outside of the classroom. The questions draw from a wide variety of topics – ancient mathematics, art, sports, science, architecture, etc. As a teacher, you can’t just assign all the questions or just the odd ones, though. There are usually at least 50 questions for each lesson, and many of them tie together based on an image or set of conditions. Also, only selected answers are provided in the back, so you may want the Solutions Manual to help you check your child’s work. We didn’t enjoy the proofs (and they’ll show up in pretty much every good geometry textbook), but otherwise it was an interesting book to use.

If you’re interested in purchasing the book, you can click on the cover image or subtitle to follow an Amazon affiliate link to the book and thanks for supporting my blog!

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