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Maria's Math news - a FREE math newsletter for parents and teachers
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Various worksheets on TONS of math topics you can generate for free!
Basic operations worksheet generator is updated! Make worksheets for whole numbers or integers - all four operations, including add & subtract or multiply & divide - horizontal or vertical - add a border and/or extra workspace, use a variable, and more.
Advice, reviews, and resources to help you choose a math curriculum!
Online math games, tutorials, and activities
Games you can play online, interactive tutorials, fun math websites and more. Arranged by topic/level for ease of use.
Learn how to TEACH concepts or about general concerns in math education.
In-depth reviews of math products
Math help & tutoring
A list of free message boards, math help websites, and online tutoring services.
Fun and games
I have two games on my site, plus links to many.
Game: Choose Math Operation
Word guess game (easy hangman)
Word guess game (difficult)
The ideas in this geometry lesson are taken from the Geometry ebook that I sell at MathMammoth.com. This lesson plan does not contain all the problems the Geometry ebook does.
This is a 1 degree angle!
|This is a protractor. It is used to measure angles.
Note how it has the shape of half a circle;
therefore it only measures angles up to 180.
It has two sets of numbers: one set goes
from 0 to 180 one way, one set from 0 to 180
the other way. Which one you read depends on
where you place the one side of the angle you
|[Picture available in the ebook]|
[Picture available in the ebook]
|To measure an angle, place the little circle or open hole of the protractor on the VERTEX of the angle. Place the zero line of the protractor on the ONE SIDE of the angle. Then read the measure where the other side hits the protractor scale. This angle is obviously an OBTUSE angle, so we read the scale at 127 degrees.|
1. Measure the following angles. If necessary, continue the sides of the angle..
2. Measure all the angles in these triangles.
3. Draw an angle of a) 35 b) 76 c) 137 d) 162
4. Here you see a pie with angles of 90,
75, 75, and 120 . Draw into the other pie diagram angles of 35
and 160 degrees. The picture already has a right angle. What
the fourth "pie piece angle" be?
[Pictures in the ebook]