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Math Mammoth Geometry 1

Math Mammoth Geometry 1 math book cover
118 pages
(includes answers)

Sample pages (PDF)
Review: Area of Rectangles Measuring Angles
Volume of Rectangular Prisms

Prices & ordering

PDF download USD $7.90

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You will be purchasing the downloads from my authorized reseller Comecero, LLC.

Printed copy $11.30

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small flag of SpainEste libro en español

Math Mammoth Geometry 1 covers all the typical geometry topics for grades 4-5: angles, triangles, quadrilaterals, other polygons,area, perimeter and volume.

Geometry is a hands-on subject, and thus, many problems in this book involve drawing. I hope the students enjoy the hands-on experience, and besides, these drawing exercises are a good means of achieving a true conceptual understanding of geometry concepts. Exercises marked with the notebook symbol are meant to be done in the student's notebook or on blank paper.

The study of geometry is also full of new vocabulary. I encourage the usage of a geometry notebook, where students will write every new concept or term, and draw a picture or pictures and text to explain the term. That will help them to remember the terms better, and most children will like creating a book of their own. The students can also do the drawing exercises in this book.

The first lessons in the book review the area and perimeter of rectangles (as taught in third grade). Then the students are introduced to angles, and learn about acute, right, obtuse, and straight angles. Students learn how to measure angles with a protractor, draw angles, and estimate some common angles.

After angles, we study parallelograms and triangle classification by angles (acute, obtuse, right). Students are introduced to symmetry. Next, we review polygons (lots of drawing exercises here). Then students learn about the circle, including the terms circle, radius, and diameter, and how to draw circles and circle designs using a compass.

Then it is time to classify quadrilaterals and triangles. There are seven types of quadrilaterals to learn about, and now students classify triangles both by sides and by angles.

The last section of the book deals with area and perimeter of rectangular shapes, and volume of rectangular prisms. I have also included a lesson for problem solving, and two review lessons.

Please see also the geometry videos on this page. Most of them match the topics in this book, and can be used to provide additional instruction.

The PDF version of this book can be filled in on a computer, phone, or tablet, using the annotation tools found in many PDF apps. See more.


I teach special education in the public school system, and just recently downloaded and have taught from Geometry 1. My middle school students love the hands-on approach and have really begun to explore the meaning of geometric terms and measurements through the use of this book. We have expanded it to include a project whereby they create designs using angles, arcs, and circles. We will be using these colorful designs to learn even more about measurements and geometric figures in conjunction with some of the lessons from the book. Thanks so much for opening up this opportunity to make math useful and fun for these students who often view math as a painful process they have to endure! Their attention to their drawings is truly amazing! We have all enjoyed the process!
Susan Medendorp
From a tutor who has used Geometry 1 with 3rd and 4th graders:

I used, and continue to use your Geometry 1 workbook as my main geometry curriculum. I use Math Advantage as a basis for my math lessons but skip around and supplement it greatly.

My son enjoys the Geometry workbook. I appreciate that you have included area, perimeter and volume in the book. Many books categorize those topics as measurement, but I've found that it is easier to teach them with geometry. The curriculum is more in depth than most for the recommended grade level.

Tracy Thompson
From a parent who has used Geometry 1 with a 4th grader:

This book is quite good for building fundamental knowledge for children who are learning geometry. This is more than enough, comparing mine when in same grade 30 years ago.

Slamet Suryanto
From a teacher who used Geometry 1 with 7th graders:

My students enjoyed the review!

Prudence Jencka

See also the review by Sol Lederman.

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By purchasing any of the books, permission IS granted for the teacher (or parent) to reproduce this material to be used with his/her students in a teaching situation; not for commercial resale. However, you are not permitted to share the material with another teacher.

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