Tuesday, September 30, 2008
Geometry (Class 12)
Lesson Title
Segments and their Measures
Overview
The warm-up today continues focusing on having students find the lengths of the sides of polygons and the areas of the polygons. Once this information is found they need to use the information to solve a puzzle. In the lesson today we continue with finding the lengths of segments. In fact we reverse the question so that students are ask to create a segment of a specified length.
Textbook Sections
§1.3 (Txt. p.17) Segments and their Measures
Vocabulary
length
distance
coordinates
ordered pair
diagonal
right triangle
leg(s) of a right triangle
hypotenuse
polygon
Key Attitudes
Math is about thinking creatively.
Key Ideas
The distance between points can be calculated.
The length of a line can be determined by thinking about it as a right triangle.
Key Skills
I can create a non-square rectangle, right triangle, or non-rectangular parallelogram on the coordinate plane when given the locations of two vertices of the shape.
I can determine the area of a figure drawn on dot paper.
I can create any of the possible squares whose vertices are on the dots of a 5 by 5 grid of dot paper.
I can determien the area of the square on the hypotenuse of a right triangle.
I can determine the length of the side of a square when I know the area of the square.
I can determine the length of a line segment using the locations of the endpoints of the segment.
Turn-In (#11)
Txt. p.790 #35, 36
Txt. p.791 #1-18
Handouts
No Handouts Posted
Assignment
Model Drawing Problem 4
Txt. p. 124 #1-4, 13-15, 28-30, 40, 41
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.
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