- http://www.mathgoodies.com/lessons/vol2/circle_area.html
- Students can review already learned material.
- There is also a worksheet section for them to work with and practice solving problems.
IV.NotesonAssessment
- Examine student diagrams.
- Were they able to find the correct area of the table?
- How about the sectors?
- Does the diagram accurately show their work?
- Is there anything missing?
- Provide students with feedback/correction on their work.
Regular Polygons
I.SectionObjectives
- Recognize and use the terms involved in developing formulas for regular polygons.
- Calculate the area and perimeter of a regular polygon.
- Relate area and perimeter formulas for regular polygons to the limit process in prior lessons.
II.Cross-curricular-Architecture
- Use the following image of a roof in the shape of a hexagon.
- This is Figure 10.06.01
- http://www.space-frames.com/commercial buildings/xha28.htm
- Have the students use the dimensions of this design to figure out the area of the roof of this hexagon.
- Then have the students draw a diagram and explain how they figured out the area of the hexagon.
- Allow time for students to share their work when finished.
III.TechnologyIntegration
- Have students complete some research on where to find hexagons and pentagons.
- Students can search architecture, nature or their own subject.
- Ask the students to keep track of the websites that they visit.
- Students should prepare a presentation of at least five examples of pentagons or hexagons in their given subject
area. - Students should include diagrams or images with their work.
IV.NotesonAssessment
- Assess student diagrams.
- How did the students figure out the area of the roof?
- Does their method make sense?
- Did they divide it into triangles?
- Did they divide it into trapezoids?
- Provide students with feedback on their work.
Chapter 3. Geometry TE - Enrichment