NumberNut
Number Nut: Shapes, Symbols and Colors: Two Dimensional Shapes
Describes, with illustrations, the basic two-dimensional shapes students will encounter in elementary Math.
Alabama Learning Exchange
Alex: Quadrilaterals
This is an inquiry lesson plan used to review Algebra 1 objectives by applying them to geometry concepts. Young scholars explore the properties of quadrilaterals and classify them by definition. This lesson plan can be use in geometry...
Khan Academy
Khan Academy: Recognizing Triangle Types
In this exercise, students practice recognizing triangle types. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.