HolcombMath

Thursday, February 26, 2009

Geometry (Class 55)

Lesson Title
CST Review 1

Overview
I will not be in class today. Students have the opportunity to work together to review material for the upcoming CST.
Textbook Sections
N/A

Vocabulary
construction
straight edge
arc
radius
center
diameter
adjacent
opposite
included
non-included
SSS
ASA
SAS
AAS
HL

Key Attitudes
Math is about building up understanding one idea at a time.

Key Ideas
A factor answers the question “How many of these are in this”?
Triangles can be constructed out of various combinations of angles and sides.
Only some combinations of angles and sides guarantee that all triangle created with this combination will be congruent-- the same size and the same shape. Other combinations only guarantee triangles which are the same shape, and some combinations guarantee nothing at all!
When multiplying two expressions, if the bases are the same the exponents need to be added.
Key Skills
I can identify key angle and side combinations which force triangles to be congruent.
I can identify and sequence the reasons which establish triangle congruence.
I can use congruent triangles to prove other facts.
I can use a straight edge and compass to construct geometric shapes.
Turn-In (#54)
Txt. p.255 #1-20-- turn in next class when I return.

Handouts
No Handouts Posted

Assignment
Finish the Opener: Algebra Word Problems- How does a fish…
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.

Intro to Calculus (Class 56)

Lesson Title
Circular Functions (9)

Overview
I am not in class today. Students have the class to work towards finishing the following:
Sangaku 12
Workshop 17
Homework 19
All of which will be due at the end of class on Monday. Students will have approximately 30 minutes of class time Monday to tie up any loose ends.
Textbook Sections
N/A

Vocabulary
radian
central angle
terminal side
circumference
rotation
circular function
sine
cosine
tangent
cosecant
secant
cotangent

Key Attitudes
Math is about using what you know to create something new.

Key Ideas
An identity is an equation which is true for all values of the variable.
You can determine if an equation is an identity by graphing the two sides of the equation separately. If these are the same graphs, then its an identity.
Key Skills
I can simplify an expression involving trigonometric functions.
I can verify that an trigonometric equation is an identity by using a graphing calculator.
I can prove that an trigonometric equation is an identity by using algebra.
I can solve trigonometric equations including ones which require substitution.
Turn-In (#55)
Nothing to turn in.

Handouts
No Handouts Posted

Assignment
Sangaku 12
Workshop 17
Homework 19
All are due 30 minutes into class-- students may use that 30 minutes to tie up any loose ends.
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.