Monday, March 08, 2010
Math 6 (Class 122)
Lesson Title
Investigation 4: Polygon Properties and Tiling
Overview
In the last class students investigated how they could predict whether or not a regular polygon could be used to create a tiling. They decided that it would be good to collect more data, in particular they wanted to see if a regular 9-gon would tile. Hence students began creating regular 9-gons. In today’s class students will use their 9-gons and continue to investigate the requirements that are necessary for a regular polygon to tile.
Textbook Sections
Problem 4.3 (Txt. p.46) Back to Bees!
Vocabulary
tiling
regular polygon
polygon
pentagon
hexagon
octagon
angle ruler
precisely
vertex
Key Attitudes
Willingness to work as a group to help meet individual and group goals.
Enduring Understandings
Change is fundamental to understanding functions.
Mathematical relationships can be represented in 4 main ways: Graphical, Numerical, Algebraic, Verbal (written and oral).
Essential Question
Why do we compare contrast and classify objects?
How do decomposing and recomposing shapes help us build our understand of mathematics?
Key Knowledge
An angle can be measured with an angle ruler.
Key Skills
I can find the sum of the interior angles of any covnex polygon.
I can justify the sum of the interior angles of a polygon by using previously agreed on facts.
I can use what I have learned about the sum of the interior angles of a polygon to develop a method for finding the sum of the interior angles of a polygonal star.
I can draw a regular 9-gon
Turn-In (#-1)
No Homeork
Handouts
No Handouts Posted
Assignment
Draw a regular 10-gon inscribed in a circle with radius of 8 cm.
Disclaimer- The assignment as stated in class is the official assignment. Every effort is made to keep this posting accurate, but you should refer to what was stated in class as the final word.
Permalink