Bucknell University – UBD Lesson Plan

Areas of Triangles and Parallelograms

Teacher_Nathaniel Nauman__________ Grade__9th and 10th____________

Date_Feb. 4, 2013___________________	Subject__Geometry____________

Stage 1- Desired Results
Established Goals: G G.2.2.2.2 – Find the measurement of a missing length, given the perimeter, circumference, or area.
Understandings: U Students will understand … how to calculate the area and perimeter of squares, rectangles, parallelograms, and triangles why the area and perimeter of each of these shapes are calculated the way that they are calculated	Essential Questions: Q What is the area of a square, rectangle, parallelogram, and triangle? How are these areas calculated? How can this knowledge be applied in the real world?
Student will know…. K the area formulas for a square, rectangle, parallelogram, and triangle	Student will be able to… S calculate the area and perimeter of a square, rectangle, parallelogram or triangle when given the base and height of an object calculate the base or height of a square, rectangle, parallelogram or triangle when given the perimeter or area
Stage 2- Assessment Evidence
Performance Tasks: T Calculate the storage area remaining in a storage unit.	Other Evidence: OE Focus question, practice problems throughout the lesson, various questions and homework problems.
Self-Assessments	Other Evidence, Summarized
Stage 3 Learning Plan
Learning Activities: L Start lesson with a focus question handout that students will need to work on and answer. Then work through the PowerPoint Slides. Introducing why it is important to be able to find area and measure length, and then moving right into the material for the lesson. Start by making sure everyone actually knows what areas is, and then explain how to calculate the area of a square and a rectangle. Then work through some practice problems about this while using these problems to explain the concept behind the area congruence postulate and the area addition postulate. Then explain how to calculate the area of a parallelogram and a triangle and why their areas are calculated the way that they are calculated. Then work through some practice problems to confirm understanding and explain how to calculate an unknown measure given a known measure and the area of a geometric object. Then have students work on an application problem so that students can see how what they have just learned can be used while also explaining how to find the area of a shape consisting of the shapes that the students were taught how to find the area of throughout the lesson. Confirm understanding and handout homework assignment papers. Extension: Some extra problems on a handout about the area of squares, rectangles, parallelograms, and triangles. Resources: White Board, Markers, White Board Erasers, SmartBoard, Projector, PowerPoint Slides, Focus Question Handouts, Extension problem handout, and the homework assignment papers.