Monday, May 19, 2008
Geometry (Class 82)
Announcements
The next test will not be until May 23 due to STAR testing-- that test will cover a lot of material!
Lesson Title
Sneaky Squares
Overview
In today’s class our warm-up gives students a chance to practice writing the equation of a circle given the length of the radius and the location of the center. The lesson for today take us back to solving quadratic equations. We see how squares become involved and how we can use that fact as a tool.
Textbook Sections
10.6 (Txt. p.636) Equations of Circles
Vocabulary
center
inscribed angle
central angle
radius (pl: radii)
chord
diameter
sections of intersecting chords
extended chords
inscribe
cyclic quadrilateral
Key Attitudes
Math is about thinking creatively.
Key Ideas
A rectangular grid can be used as an organization tool for multiplying binomial expressions and factoring trinomial expressions.
Quadratic equations which are in the form of perfect squares are easy to solve!
Key Skills
I can use a rectangular grid to multiply binomial expressions.
I can use a rectangular grid to factor trinomial expressions.
I can determine if a trinomial is a perfect square.
I can explain a process for determining if a trinomial is a perfect square.
I can write the equation of a circle given the length of its radius and the location of its center.
I can determine if a point is on the circumference, inside the circumference, or outside the circumference of a circle given the location of the circle and the equation of the circle.
Turn-In (#81)
Benchmark 1 Test
Chapter 10- Lesson 7
Arcs and Segments Warm-Up
Handouts
Chapter 10- Lesson 8: Sneaky Squares
Chapter 10- Lesson 9: Using Sneaky Squares
Benchmark Test 2 Answers
Assignment
Benchmark Test 2-- Skip #30c and just write the proof for #36 if the flow chart confuses more than helps.
Finish Warm-Up
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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