Beacon Lesson Plan Library
Tetrahedron Kites
MAdele Carson Santa Rosa District Schools
Description
Students learn about twodimensional and threedimensional figures by making a kite.
Objectives
The student uses appropriate geometric vocabulary to describe properties and attributes of two and threedimensional figures (for example, faces, edges, vertices, diameter).
The student draws and classifies twodimensional figures having up to eight or more sides.
Materials
Kite directions from Web site
Drinking straws
String
Tissue paper (colored looks best!)
Scissors
Protractors
Rulers
Glue or glue sticks
Preparations
1. Read through the directions for the kitebuilding on the web site.
2. Before the lesson, have all of the materials ready!
3. When tying off knots at the end of the straws, be sure to double knot tightly.
Procedures
1. Introduce the concept of twodimensional and three dimensional objects by drawing a picture of a triangle on the board.
2. Ask what object is represented (triangle) and discuss the meaning of the prefix tri. Ask students what other words have tri at the beginning and why?
(Triceratopsthree horned; tricyclethree wheeled; tripletsthree children, etc.)
3. Show the students a triangle made with three straws strung on a piece of string (with ends tied). Discuss the face of the triangle, vertices, edges, and angles.
4. String two more straws and show the students the resulting figure (diamond). Tie off. Ask what is different about the figure (shape, size).
5. Add another straw to the string and tie off to connect far points of diamond. (See tetrahedron directions for picture.)
6. Explain which are the faces, edges, and vertices of the tetrahedron.
7. If the students are working in small groups, the first student to get the kite made may help the others.
8. Fly the kites!
Assessments
Students will be able to explain the vertex, edge, and face of their kites to others.
Extensions
In building the kites, you can cut the straws in half in order to make smaller kites. You can also tie four tetrahedrons together to make a large tetrahedron (and tie four of these together for a really large kite).
Tetris computer game
Web Links
Web supplement for Tetrahedron Kites Tetrahedral Kite Variations
