Duke University
Duke University: Web Feats Ii: Altitude Theorem for Equilateral Triangles
This resource provides information about the altitude theorem for equilateral triangles, in addition to links on related topics. Requires Java.
Alabama Learning Exchange
Alex: Sailing on the Wind
This is a hands-on lesson that uses science and the steps of the Engineering Design Process to determine important properties in sail design materials and learn how to harness wind power. Students will learn that a problem can be solved...
Alabama Learning Exchange
Alex: Freezing Things: States of Matter
The class will go back over the Power Point presentation on chemical and physical properties. The teacher will then conduct numerous liquid nitrogen demos. This lesson plan is used early in the Chemistry course. The students love it....
Alabama Learning Exchange
Alex: What Do We Have in Common?
This inquiry lesson explores the definitions of quadrilaterals and the properties of the diagonals of quadrilaterals to classify quadrilaterals. Students will work cooperatively to justify conclusions. This lesson plan was created by...
Alabama Learning Exchange
Alex: Quadrilaterals
This is an inquiry lesson used to review Algebra 1 objectives by applying them to geometry concepts. Students explore the properties of quadrilaterals and classify them by definition. This lesson can be use in geometry classes. Students...