Geometry overview

Geometry is the branch of mathematics that deals with the deduction of the properties, measurement, and relationships of points, lines, angles, and figures in space from their defining conditions by means of certain assumed properties of space.

ONLINE RESOURCES

Introduction to Geometry

Polygons

More About Angles

Geometry in Three Dimensions

There are many tools to show our future students to help them develop this mathematics skills. This tools are free for everyone and we all should use them in our classroom because they are important tools. 

Polygons & Number of Sides or Vertices

Polyhedra

After watching this video I can see how polyhedral figures are unfolded. This are just the regular polyhedra but there is more. A polyhedra is a solid figure with many plane faces, typically more than six.

Euler's Theorem   V+F-E=2

Using Technology in the Classroom

Nowadays technology is used everywhere. why not use it in school were students can have fun and be able to see things that they may not be able to see while working with paper and pencil. GeoGebra is an online tool that can be used in a classroom to let the students explore their angles first and then have them explore different activities based on their grade level.

Thank You Mrs. Klassen for this great tool that we can use in our classroom in the future. This is a grat tool for any grade level because there is so many things to do on this site that exploring and get to know this tool is worth it four our future too.

Something simple just like a house will make a great learning experience for our students in the future. 

Polygons

A closed plane figure bounded by three or more straight sides that meet in pairs in the same number of vertices, and do not intersect other than at these vertices. The sum of the interior angles is ( n --2) × 180° for n  sides; the sum of the exterior angles is 360°. A regular polygon  has all its sides and angles equal. Specific polygons are named according to the number of sides, such as triangle, pentagon, etc.

The following video is just a fun song to show students their polygons enjoy.

Using The Angle Finder

The angle finder could be used to recognize angles on an activity. This will help classify the angle but not tell the exact measure unless is a right or a straight angle.For example the picture below shows how I found a right angle on my computer screen. This is how this tool would be use in a classroom setting.

I can also see from the picture below that my table top has a straight angle.

There are many ways to use the angle finder as a tool to recognize and find different angles. Any grade level may use this tool because it is easy to use and gives good information for students to base their work on.

Angle Finder

Q: What is an Angle Finder?
A: An angle finder is a tool used to find angles.
Q: How can a make an angle finder?
A: Easy, 1. Gather materials (index card and pencil)
               2. The corner of the index card is 90 degrees , draw with the pencil the angle.
               3. The bottom of the index card is 180 degrees, label with pencil.
After you have made your angle finder you can start exploring and finding angles around your environment.

Remember:
Acute angles are < 90 degrees.
Obtuse angles are >90 degrees but <180 degrees.
Right angles are 90 degrees.
Straight angles are 180 degrees.