Evaluation

The teacher will tell the instructions and will remind the safety procedures to the students. The teacher will provide some toothpicks, clay and construction paper to each student. The students will create at least one of the 3D shapes either a pyramid, a cube, or a prism with the clay and the toothpicks. While the students are creating the model the teacher will be walking around asking questions to assure that students are understanding the concept and to evaluate them.

EXAMPLE

 The teacher will asking some of these probing questions to the students to evaluate them:

• How many toothpicks did you need to make the edges on a cube?
• How many pieces of clay do you need to make the vertices on this figure? 
• The cube has how many faces? 
• What are the shapes of the faces and how many of each type of face create this figure? 
• Does this figure have faces in any other shape?
• What is the name of this figure? 
• If this figure had a face that was not a square, would it still be a cube?  Explain. (Answers may vary. It could not be a cube because a cube has all square faces; it could not be a cube because all square faces are an attribute of a cube; etc.)

(20 minutes)