Profile & Product Catalog
Lynda Aguirre
United States - Texas - San Antonio
3.9
"When students know what math means, they won't get the rules mixed up".

CUSTOM CATEGORIES
SUBJECT
PRICES
TOP RESOURCE TYPES
4.0
An easy way to factor quadratic polynomials. This lesson teaches how to handle trinomials using the method invented by Lynda Aguirre in 1999. Ta...
\$10.00
4.0
Subject:
Level(s):
Duration:
N/A
0.0
Finding all the factors of numbers and then determining the Greatest Common Factor
\$5.00
Not yet rated
Subject:
Level(s):
Duration:
N/A
0.0
Factoring trinomials using the method of Completing the Square. Step by step lecture includes examples and detailed explanations of the differen...
\$5.00
Not yet rated
Subject:
Level(s):
Duration:
50 Minutes
0.0
An easy way to factor quadratic polynomials. (replaces grouping) This lesson teaches how to handle four term quadratic polynomials using the met...
\$10.00
Not yet rated
Subject:
Level(s):
Duration:
N/A
0.0
Step by step lecture demonstrating how to factor trinomials using the quadratic formula. Includes real and imaginary solutions
\$8.00
Not yet rated
Subject:
Level(s):
Duration:
50 Minutes
0.0
How to calculate exponents, zero power, and negative exponents are included.
\$8.00
Not yet rated
Subject:
Level(s):
Duration:
N/A
3.5
Adding Fractions with the same denominator and the Butterfly Method (addition shortcut)
\$5.00
3.5
Subject:
Level(s):
Duration:
N/A
0.0
PowerPoint Lecture explaining concept of scientific notation, then providing step-by-step examples of changing form from scientific notation to s...
\$10.00
Not yet rated
Subject:
Level(s):
Duration:
N/A
4.0
Step by step lecture demonstrating how to do Polynomial Long Division.
FREE
4.0
Subject:
Level(s):
Duration:
N/A
0.0
Addition and Subtraction of Fractions with different denominators by finding common denominators
\$5.00
Not yet rated
Subject:
Level(s):
Duration:
N/A
4.0
Graphing one variable inequalities using a number line
FREE
4.0
Subject:
Level(s):
Duration:
N/A
0.0
Slideshow lecture demonstrating how to find prime numbers and how to use them to perform prime factorization.
FREE
Not yet rated
Subject:
Level(s):
Duration:
N/A
0.0
This powerpoint slideshow demonstrates the step by step process of solving for "x" in equations using addition, subtraction, multiplication, and ...
\$8.00
Not yet rated
Subject:
Level(s):
Duration:
N/A
0.0
Lecture demonstrating how to solve Radical (squareroot, cuberoot) equations one step at a time. Includes definitions, examples, special cases and...
\$10.00
Not yet rated
Subject:
Level(s):
Duration:
N/A
Showing 1-14 of 14

### Ratings

Digital Items
Overall Quality:
3.9
Accuracy:
4.0
Practicality:
3.9
Thoroughness:
4.0
Creativity:
3.8
Clarity:
3.9
Hard Goods
Shipping Efficiency:
N/A
Overall Quality:
N/A
Accuracy:
N/A
Practicality:
N/A
Thoroughness:
N/A
Creativity:
N/A
Clarity:
N/A
Used Goods
Shipping Efficiency:
N/A
N/A

Total:
3.9
6 total vote(s)
KarenO re: Greenebox Factoring Method:Trinomials
Lynda,
I absolutely LOVE this method, but I do have a question that the Greenebox Method doesn't quite cover correctly. In a problem like #2 in your sample problems on the last page where the second term is negative and the third term is positive, following the steps of the Greenebox method as explained in your PowerPoint doesn't lead the students to the correct answer, as the signs of the split middle term are both negative as they should be, but the final answers both end up positive when they need to be negative. Any suggestions on how to correctly teach this without changing anything in the method as it is presented in your PowerPoint?
January 5, 2012
Lynda Aguirre  (TpT Seller)
Hi Kareno,
I looked at the problem you mentioned and it has the correct answer (both negative). Without seeing exactly how you are doing the problem, I can only guess at where the misunderstanding is. When you chose the signs for the inner and outer terms, they should both be negative because they were added together (since the 3rd term is positive). These negative signs both come out to make the factors negative. In other words, here is how it's broken up.
Problem: 3y^2-16y+5
Inner and outer terms: -1y and -15y
Final factors: (3y-1)(y-5)
Hope this helps. If you have more questions or if I'm looking at the wrong problem, please let me know.
Thanks,
Lynda
P.S.If you want to send me an email through my tutoring website: greenebox.com, I'll give you my skype login name and then I can take a look at your work and go into more details using live video
January 6, 2012
TEACHING EXPERIENCE

6 years-Public School Mathematics: Grades 6-12 14 years-College/University Mathematics Private Tutoring: K-college (all levels of mathematics)

MY TEACHING STYLE

Online lectures: Concept based combined with step-by-step examples of standard methods Group work: discovery method and concept exploration

HONORS/AWARDS/SHINING TEACHER MOMENT

Associate Professor of Mathematics-(tenured) at San Antonio College

MY OWN EDUCATIONAL HISTORY

BS Math Education 1991 UTSA Texas Teaching Certificate MS Mathematics- concentration statistics UTSA Mathematics Education Post-Graduate courses-(48 hours)