Lesson Plan: Student Work

by Pat Brewster, June, 2002


Subject Level
Main Lesson
Learning Goals
Web Sites
Time Estimate
Student Work
Materials for Jeopardy
Assessment
Jeopardy.  Suggested Rules
Standards
Extensions

 
 

Student Work.  (See also Jeopardy Questions and Answers packet and worksheet called Jeopardy Score Sheet.)


Student Work.
FACTORING
Packet of Sample Problems.
Pat Brewster

 Name:__________________________________________                                                                     Date: ___________________
 

I.  First, review these Divisibility Rules.  Give the rules for determining when a number is divisible by the numbers in the left column.   Give examples.
 

Is a number divisible by:
Rule:
Example:
2 . .
3 . .
4 . .
5 . .
6 . .
8 . .
9 . .
10 . .
25 . .
100 . .

II.   Find the Greatest Common Factor:
 
1.  12 and 20
 
 
 

 

2.  25 and 75 3.  42 and 48 4.  400 and 600 5.  39 and 52 6.  90 and 135

III.  Reduce:
 
1.  12 / 20
 
 
 

 

2.  25 / 75 3.  42 / 48 4.  400 / 600 5.  39 / 52 6.  90 / 135

IV.  Factor, using the Distributive Property:
 
1.  12x2 – 30 x
 

 

2.  40x3 –  4x2 3.  6xy + 12x2 y2

V.  Factor these trinomials: (Problems 1-5)
 
1. x2 + 7 x + 12
 
 
 

 

2.  12x2 – 7 x -12 3.  Common Factor
    6x2 – 46 x + 28
4.  Perfect Square 
     16x2 – 40 x + 25
 
 
 

 

5. variable is a binomial
   3(x-8)2 - (x-8 ) - 14
 6.  factor by Grouping
  ax + 2a + bx + 2b

VI.  Use factoring to Reduce:
 
1.     4 x2 / (6 x2  - 8x)
 
 

 

2. (2x2 – 18) / (2x2  + 2 x -24) 3.  (4x2 – 12x +9) / (2x2  + 11 x -21)

VII.  Use factoring to Solve Equations:  Remember:

Simplify, arranging all terms on one side, in descending order.
Factor out common factors.
Set one side equal to zero
Factor
Set each factor equal to zero, making small equations.
Solve the small equations, to find the possible values of the variable.
Check.
1. 2x2 – 16 x  = 0
 
 
 
 
 

 

2.  x2  + 7x = 60 3.  3x2  + 14 = 23 x
4.  Common Factor.
     10x2  -  5 x - 225 = 0
 
 
 
 
 

 

5.  Difference of Squares.
     4x2  -  81 = 0
6.  Double Root.
     x2  -  20 x + 100 = 0

 
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