Teacher's Guide: Geometry Lesson Plan for Surface Area of Pyramids and Cones

March 2nd, 2007 9th-10th Grade
20 students Geometry 45 min.
Surface Area and Volume
Lesson #2: Surface Area of Pyramids and Cones

Context:
The unit is over surface area and volume, so many of the sections (as is this one) are over finding surface area for different types of shapes. This section is over pyramids and cones. The previous section dealt with finding surface area of prisms and cylinders and defining some of the basic terms that will be used to describe the three-dimensional shapes we will be working with in section 12.2. Students learn about such terms as faces, edges, and bases in the first section which are important to know when dealing with pyramids and cones.

Objectives:
1. The students will understand why the surface area formula is what it is.
2. The students will be able to find the surface area of a pyramid and a cone.
Connections
-MA-HS-3.1.10
Students will describe the intersection of a plane with a three-dimensional figure.
-Objective I

-MA-HS-3.1.9:
Students will classify and apply properties of three-dimensional geometric figures.
Objective II

Assessment Plan
Objective Number Type of Assessment Description of Assessment Depth of Knowledge Level Adaptations and/or Accommodations
1. Formative I will use the interview technique and have the students guide me through the process, and then I will go around the room to answer any questions the students have as they work on their problems. DOK II None.
2. Formative I will assign the students a couple of problems and go around the room to take a look at the students work to make sure they understand how to calculate surface area. DOK II None.

Resources, Media and Technology
- 3-Dimensional Plastic Shapes