• Identifying angles as right, obtuse, acute, or straight
• Classifying triangles as equilateral, isosceles, or scalene
• Identifying figures that have rotational symmetry
• Predicting the results of a flip (reflection), turn (rotation), or slide (translation)

Star Spangled Math
(Scroll down to Mathematics → Geometry → Star Spangled Math)
Eight cross-curricular lessons. Use lesson six for identifying geometric shapes.

Geometry: Beyond Pencil and Paper
(Scroll down to Mathematics → Geometry → Geometry: Beyond Pencil and Paper)
Eleven lessons that cover many aspects of geometry.

What's in a Shape?:
Students will discover how the tangram pieces are related to one another; and determine how many different combinations of the triangles, squares, and parallelograms in tangram sets can make a given shape. 

Visual Patterns in Tessellations
(Scroll down to the Geometry section.  This lesson is listed there in ABC order.)
Students will be able to calculate the area of a random shape on a grid.

Polygons
Students will identify polygons and become familiar with geoboards.

The Greedy Triangle
Students will listen to The Greedy Triangle and use geoboards to create various polygons. Students will also make shapes out of construction paper to form a "shape garden" bulletin board.

Rotational Symmetry
Students will learn to show rotational symmetry using pattern blocks.

Ovals, Rectangles, Squares, and Triangles
Students will identify geometrical shapes displayed in photographs of everyday objects in a metropolitan setting.

Grandfather Tang's Story
Students will recognize, describe, and perform transformations (rotation/turn, reflection/flip, and translation/slide) on two dimensional shapes. 

Sir Cumference and the First Round Table
Students will analyze characteristics of various 2 dimensional shapes and explore their properties and use various vocabulary terms to discuss geometric relationships.

Picture This!
Students create a geometric picture and e-mail the description to key pals who then try to draw the picture based on the written description.  Developed for middle school, this lesson can easily be adapted for upper elementary.

Geometry for the Middle Grades
A hands-on, multiple intelligence, geometry unit for students with 21 activities.  This unit was developed for middle school but most of the activities are appropriate for upper elementary.

Flying Into Spring
Students use measurement and geometry to design a kite for spring.

Third Grade Shapes Up!
(Scroll down to Mathematics → Geometry → Third Grade Shapes Up!)
This unit contains 8 lessons that focus on geometric shapes and figures.  Students will observe geometric shapes in their environment and be exposed to hands-on activities to enhance their understanding of geometry.  Although designed for third grade, this activity is also appropriate for upper elementary grades.

 

Measuring Angles
Students will use a virtual protractor to measure angles. 

Angles and Angle Terms 

Isometric Drawing Tool 

Fractals 

Geometry Figures on a Geoboard
(Scroll down to Activity 6)
Students will make shapes on a geoboard based on knowledge of angles, triangles, rectangles.

Tessellate!
Interactive activity with tessellations.

Dueling Pinwheels
Students use Sketchpad to manipulate transformation, rotations, and reflections.

Visualizing Transformations
Understanding Congruence, Similarity, and Symmetry Using Transformations and Interactive Figures

A Maths Dictionary for Kids by Jenny Eather 
The Maths Dictionary is animated, interactive, and allows students to practice their math skills. Over 500 terms are explained in simple language. Click on "billion" and discover that you have 10 billion brain cells working for you right now. Roll your mouse over the world time zone chart and you instantly know the time for that part of the world. Every math teacher should bookmark this Web site.

National Library of Virtual Manipulatives
Virtual manipulatives related to NCTM standards in the areas of Number & Operations, Algebra, Geometry, Measurement,  and Data Analysis & Probability.  To access tools, click inside the grid on the cell that matches the grade level and standards area desired.

Figure This!
From NCTM:  Three to four math challenges using real world examples are posted here each month. For those who need help solving the challenge, there are hints and complete solutions, along with related problems.

Making Triangles:  Investigating the Concept of Triangle and the Properties of Polygons
This two-part example describes activities that use interactive geoboards to help students identify simple geometric shapes, describe their properties, and develop spatial sense. Part one focuses on triangles.  Part two focuses on polygons.

Tangram Puzzles
Students will use tangram pieces to form figures and/or polygons through rotations or flips.

Geometric Terms
Great source for geometric vocabulary, including term, definition, and example of shape.

Vortex!
Click on the correct shape to score a point.

Tangram Puzzles
Place the puzzle shapes into the outlines to create ancient patterns called tangrams.  Travel from level to level to solve all the puzzles.
                                     

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