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Math Mammoth Geometry 2

Math Mammoth Geometry 2 math book cover
143 pages
(includes answers)

Sample pages (PDF)
Contents
Area of Polygons
Area and Perimeter Problems
Surface Area
Converting Between Units of Volume


Prices & ordering

PDF download $6.90

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

Printed copy $12.10, b&w

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small flag of SpainEste libro en español

Math Mammoth Geometry 2 continues the study of geometry after Math Mammoth Geometry 1, and is suitable for grades 6-7. It concentrates on two broad and important topics: area and volume of all common shapes.

In the first section of the book, which is also the longest, students learn to calculate the area of all common shapes: triangles, parallelograms, other polygons, and circles. They encounter Pi and how it relates to the circumference of a circle. We also briefly study the proof for the formula for the area of a circle. I feel it is important that students encounter justifications for mathematical formulas and procedures and even read some proofs before high school. We don't want students to think that mathematics is only a bag of magic tricks or formulas to memorize that seemingly came out of nowhere. Proofs and logical thinking are foundations to mathematics and school mathematics should not be left without them.

Next, we study nets and surface area of common solids. By this point, the student needs to know how to calculate the area of two-dimensional shapes (specifically, the area of rectangles, triangles, and circle). There is one more section about area, in which we learn how to convert between various units of area, both metric and customary.

In the lesson Slicing Three-Dimensional Shapes, we slice three-dimensional solids with a plane, and learn that the result is always a two-dimensional shape. Students see that in a concrete way by slicing cubes and pyramids made of modeling clay. Some Internet links (provided in the lesson) will also help students to visualize what happens when a solid is cut with a plane.

Lastly, the book teaches about volume of common solids. I assume the students already know how to find the volume of a right rectangular prism (a box). First we expand this topic by calculating volumes of rectangular prisms with fractional edge lengths. Then we go on to calculate volumes of other solids: prisms, cylinders, pyramids, and cones.

Besides simple calculation exercises, the lessons contain many real-life applications, word problems, and mathematical problems concerning area and volume. I have tried to create a variety of problems to encourage students' problem-solving skills.

These topics (area and volume) involve lots of calculations, and the calculator is allowed in the problems that are marked with a little calculator image. Middle school students also need to learn other geometry topics that are more "geometric" in nature: congruent transformations, angle relationships, and compass-and-ruler constructions (covered in Math Mammoth Geometry 3).

The PDF version of this book is enabled for annotation. This means that if you prefer, the student can fill it in on the computer, using the typewriter and drawing tools in Adobe Reader version 9 or greater.


Please note that the earlier version of this book (before March 2014 or before Edition 3) covered a different list of geometry topics.


Better Yet - Bundle Deals!

Blue Series - $120 (download) or $125 (CD)
Blue Series for grades 1-3 - $45 (download)
Blue Series for grades 4-7 - $75 (download)

Light Blue Series, grades 1-7 - $175 (download) or $180 (CD)
Light Blue Series, grades 1-3 - $75 (download)
Light Blue Series, grades 4-7 - $100 (download)

Golden/Green Series - $65 (download) or $70 (CD)

All Inclusive Bundle - $233 (download) or $238 (CD)

"Everything" Bundle - $299 (download only)

Learn more about these Math Mammoth bundles!


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You can buy Math Mammoth books at:

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  • Rainbow Resource carries printed copies for the Light Blue series books, plus several CDs (Light Blue and Blue series).
  • Homeschool Buyers Co-op offers download versions of the Light Blue series, plus the Blue series bundle.
  • Educents carries download versions of the Light Blue and Blue series.
  • K5 Learning offers download versions of the Blue series.
  • Lulu offers printed copies for the Blue, Golden, and Light Blue series books.

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.

In other words, you are permitted to make copies for the students/children you are teaching, but not for other teachers' usage.


Math Mammoth books are PDF files. You will need Adobe Reader to view them, including if you use a Mac or Linux. You can try other PDF viewers, but they seem to either omit or mess up some of the images.

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