Learn how to creatively use the Polydron® Sphera Starter and Class Sets to make geometric models. This video provides tips for teachers, tutors, and parents of homeschooled children.
(10:21)

Learn how to creatively use the Polydron® Prism Starter Set to make geometric models. This video provides tips for teachers, tutors, and parents of home schooled children.

In this professionally-produced video, understand why children learn geometry most effectively when it is part of their daily lives and how children are capable of learning geometry at a much earlier age.

Learn how to creatively use several Polydron® Classroom Sets to make geometric models. This video provides tips for teachers, tutors, and parents of home schooled children.

Learn how to creatively use the Polydron® Frameworks and Archimedean Solids Sets to make geometric models. This video provides tips for teachers, tutors, and parents of homeschooled children. (19:11)

Learn how to creatively use the Polydron® Pyramids Set to make geometric models. This video provides tips for teachers, tutors, and parents of home-schooleded children. (10:38)

Review appropriate notation for angle measurement, and describe angles
in terms of the amount of turn. Use reasoning to determine the measures
of angles in polygons based on the idea that there are 360 degrees in a
complete turn. Learn about the r...elationships among angles within
shapes, and generalize a formula for finding the sum of the angles in
any n-gon. Use activities based on GeoLogo to explore the differences
among interior, exterior, and central angles.[more]

Explore several methods for finding the volume of objects, using both
standard cubic units and non-standard measures. Explore how volume formulas for solid objects such as spheres, cylinders, and cones are derived and related.

Learn that area is a measure of how much surface is covered. Explore
the relationship between the size of the unit used and the resulting
measurement. Find the area of irregular shapes by counting squares or
subdividing the figure into sections. L...earn how to approximate the area
more accurately by using smaller and smaller units. Relate this
counting approach to the standard area formulas for triangles,
trapezoids, and parallelograms.[more]

Investigate the circumference and area of a circle. Examine what
underlies the formulas for these measures, and learn how the features of the irrational number pi (π) affect both of these measures.

Please make your comments on categories positive, and not just negative.

People work hard on educational categories, and we want to encourage them to make more!

Profanity (curse words), sexually suggestive remarks, and other such obviously inappropriate comments
will be deleted immediately, and are grounds for immediate expulsion. Remember, children use this website.

Personal criticism on project forums and in video content is not allowed and will be deleted immediately.
Any violations of this rule could result in expulsion from the project so please, no insults or other negative
personal remarks.

Very harshly-worded criticism of content will also be deleted promptly. Please use your vote to express your
harshest feelings. Repeated violations of this rule can result in expulsion. If you must criticize another
person's hard work, then be nice about it.

People work hard on educational categories, and we want to encourage them to make more!