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Math Mammoth Geometry 1
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Math Mammoth Geometry 1


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

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

The problems in this book involve lots of drawing. Geometry is a hands-on subject, and many children like that. Moreover, drawing is an excellent means of achieving the conceptual understanding that geometry requires. 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 lessons in the book

First we 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 different kinds of triangles (acute, obtuse, right). We also review polygons and then go on to a lesson about circles. Students learn the terms circle, radius, and diameter, and learn to draw circles and circle designs using a compass.

Then we go on 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.

You can use most of the geometry videos on this page in conjunction with Math Mammoth Geometry 1.

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Reviews (3)
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September 3rd, 2011
I am very happy with this work, and my son has enjoyed working through it. Wish I had known about this web site a long time ago, would have saved me a lot of head aches and traveling around looking for suitable material. So thank you very much [...]
June 14th, 2011
I love Math Mammoth Books! They explain the lesson clearly and a bit differently than traditional text books. Not a huge difference, but just enough to hear it a different way, which helps. This can be used as a complete geometry curriculum source, or [...]
October 7th, 2010
We haven't had the chance to use this yet but it looks great! My oldest ds is 12 and having trouble with geometry. I will review again when we've had the chance to use it. [...]
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10.26 MB
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File Last Updated:
May 21, 2018
This title was added to our catalog on January 18, 2007.