## Monday, October 31, 2011

### Math Literature - Angles are Easy as Pie

Angles Are Easy as Pie by Robert Froman is a delightful book for kids.
It teaches and entertains!

I love combining math and literature. The children get to hear a story and learn math concepts at the same time. Even the topic is fun! Who doesn't like dessert? A real pie or cake to eat after reading the book would be the icing on the cake! (Ha Ha!)

This book can be used to introduce or reinforce the concept of angles. It begins by telling the readers that if they like pie then they also like angles. It explains that every time you cut a piece of pie you are cutting an angle! Cutting a small piece of pie makes a small angle and cutting a large piece of pie makes a larger angle.

The book also relates the size of angles to the length of time using an analog clock which is another great tool to teach angles.

Besides teaching about the angles of a circle this book also introduces angles in a triangle, quadrilateral, pentagon, hexagon, heptagon, and octagon.

Now if you'd like to add measurement to this geometry activity, why not make a pie or cake too!

Have fun with math!

### What are NETS of 3D Shapes?

A NET is a flat diagram of a solid figure (2 Dimensional drawing of a 3 Dimensional shape).

Using NETS to make 3D shapes is lots of fun for kids.

Suggested Activities:

Here are some Videos about nets from You Tube. Click on the links below to view.

~ 3D Shapes and their Nets

~ Introduction to Nets and 3D objects

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Here is a link to some great nets for kids from SEN Teacher that you can download and print.  The students can color, cut, and paste/tape the 2D shapes to make 3D shapes. Click on the link below.

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Students can create their own nets of different 3D shapes. They could use dot or grid paper.

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Students could "unglue" a cereal or other small box to change its shape from 3D back to its original 2D shape.

 3D Box

 NET - 2D

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Have fun with 2D and 3D shapes!

## Sunday, October 30, 2011

### Venn Diagram - 2D and 3D Shapes

A Venn Diagram is an easy to make and read Graphic Organizer that compares/contrasts two or more things.

You can learn a lot from a graphic organizer in just one glance.

GEOMETRIC SHAPES

You can use circles or other shapes to make a Venn Diagram.

When students compare and contrast, they observe the similarities and differences between things. The Venn Diagram shows how things are alike and how they are different.

A Venn Diagram is made with two (or more) overlapping circles. Each circle is called a set.  The intersection where 2 sets overlap, is where students write the characteristics that the things have in common. To the right and left of the overlapping area is where students list the differing characteristics of the things.

The students could compare/contrast the characteristics of  2D and 3D Shapes and thus demonstrate their understanding of how these shapes are alike and how they are different.

The students could draw the Venn Diagrams in their Mathematics Notebook or you could download one of the FREE Venn Diagram Worksheets from my website (Learning Workroom).

Go to Free Worksheets

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Have fun with math!

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## Saturday, October 29, 2011

### Geometry - 3D Shapes Crossword Puzzle

A Crossword Puzzle is a fun way to reinforce vocabulary for a unit of study. Here is a Crossword Puzzle on Three Dimensional Shapes and Their Properties.

You can download the free puzzle from my website (Learning Workroom). Click on the link below then go to Free Worksheets.

http://www.LearningWorkroom.com

Have fun with Geometry!

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## Friday, October 28, 2011

### Geometry - What is a Sphere?

A SPHERE is a geometric solid or 3D shape.

Features: A sphere is a curved solid figure with no faces, edges, or vertices (corners).

Suggested Activities

• Have students observe a sphere(s) manipulative(s) or picture(s) of a sphere(s).  Discuss its properties.

• Have students describe the features of a sphere.

• Have students search their home or classroom to find examples of spheres. How many can they find?

• Have students use clay and other arts and crafts materials to create spheres.

Have fun with geometry!

## Thursday, October 27, 2011

### Geometry - What is a Pyramid?

A PYRAMID is a 3D Geometric Shape.

Features: A pyramid has 3 or more triangular faces and 1 base. It is named for the shape of its base.

Examples: triangular pyramid, square pyramid

Suggested Activities

• Have students observe a pyramid(s) manipulative(s) or picture(s) of a pyramid(s).  Discuss its properties. Have students describe the features of a pyramid.

 Egyptian Pyramids

• Have students search their home or classroom to find any pyramid shapes.

 Brainteaser

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• Have students create pyramids with arts and crafts materials.

• Have students use NETS  (2D representations of 3D Shapes) of pyramids to create pyramid models.

 Triangular Pyramid Net - (Tetrahedron)

 Square Pyramid Net

Have fun with geometry.

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## Wednesday, October 26, 2011

### Geometry - What is a Prism?

A PRISM is a 3D Shape or Geometric Solid.
Features: A Prism has 3 or more rectangular faces and 2   identical parallel bases.

 Rectangular Prism

 Rectangular Prism
Examples:
• Rectangular Prisms - made of 6 rectangular faces.
• Triangular Prisms - made of 3 rectangular faces and 2 triangular bases
• Pentagonal Prisms - made of 5 rectangular faces and 2 pentagonal bases
• Hexagonal Prism - made of 6 rectangular faces and 2 hexagonal bases
• Octagonal Prism - made of 8 rectangular faces and 2 octagonal bases
• Etc.

Suggested Activities

• Have students observe prism manipulatives or pictures of a prisms.  Discuss their properties. Have students describe the features of different prisms.

 Triangular Prism

 Hexagonal Prism and Octagonal Prism

 Pentagonal Prism

• Have students look in their homes or classrooms for examples of prisms. How many can they find?

 Rectangular Prism

• Have students create prisms with Arts and Crafts Materials.
• Have students create prisms with NETS  (2D representations of 3D figures).

 Rectangular Prism

 Triangular Prism

Have fun with math!

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