To all my current students, former students and parents,
I have left teaching for the western mountains of Maine, i.e. Carrabassett Valley. I have to make many changes to this site which I will maintain. Of course I have to remove all connection to the Portland Public School System and Deering High. I ask for your patience.
The best to all,
Gregory Landry
DUE TO MAJOR CHANGES IN GEOGEBRA THE OLD GEOGEBRA MODULES
THAT I DEVELOPED ARE NOT WORKING. I MUST GET TO ALL THE MODULES AND REWORK THEM
BASED ON THE NEW FORMAT OF TRANSFORMING GEOGEBRA MODULES TO WEB BASED MODULES.
THIS WILL BE A MAJOR TIME CONSUMMER SO THIS MAY TAKE SOME TIME.
PLEASE LET ME KNOW IF YOU FIND MODULES THAT ARE NOT WORKING.
GET EXTRA CREDIT AND HAVE COMMUNITY SERVICE BY HELPING
TEACHERS IN THEIR MATH CLASSES
Hey gang,
Math teachers could use in-class helpers for some of their classes. If you have a free block and you are in my Accelerated Pre-Calculus class or AP Calculus class and want to help those teachers, including myself, you'll get extra credit. If you're interested please contact me at landrg@portlandschools.org. Keep in mind that if you choose to do this it's a commitment for the semester though you do not have to do this every day. This will look great on your college applications!
Mr. L.
DO YOU LOVE MATH AND PHYSICS AND
LOVE TO SEE COOL APPLICATIONS?
DO YOU LOVE STATISTICS? MR. BORLAND DOES!
SO CHECK OUT THIS STATISTICS VIDEO!
IS THERE A SCIENCE OF MOTIVATION?
DID YOU KNOW?
Dyscalculia is a difficulty in learning mathematics which is thought to affect 3-6% of the population and may be due, at least in part, to a dysfunction of areas of the brain that represent numerical information. While dyscalculia has been studied for many years in the educational field, cognitive neuroscience research on dyscalculia is only just beginning.
Most of us take it for granted that math works—that scientists can devise formulas to describe subatomic events or that engineers can calculate paths for spacecraft.
So Is math invented or discovered? A leading astrophysicist suggests that the answer to the millennia-old question is both.
HAVE YOU EVER WANTED TO SAIL OR BOAT ON THE OCEAN?
IF SO YOU HAVE TO UNDERSTAND
"SINGLE ANGLE BEARINGS" AND "DIRECTIONAL BEARINGS"
TO GET TO YOUR DESTINATION.
Do you want to approach Algebra in a slightly different way. Here are a series of 9 workbooks - yes, workbooks that a student can print out and do work inside the pages. This is a way for students to have a portfolio of work.
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NEW TO DEERINGMATH.COM
!!!!
UNIVERSITY ALGEBRA CLASS AND WORKSHEETS TO
PREPARE FOR THIS CLASS
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It's important that you understand that a university algebra class is more rigorous than a high school algebra class. If you plan to take a university algebra class it will be in your best interest to work your way through these prerequisite worksheets including a Comprehensive Review, Exit Exam Review and a Practice Exit Exam.
These worksheets and answer keys will also be useful for an Algebra 1 Part 1 and Algebra 1 Part 2 class.
There is also a full course of University Algebra in pdf format on this page.
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WHAT ARE CONICS?
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Conics, or conic sections, are the intersection of a plane with an infinite double cone. If that plane cuts both cones, it is a hyperbola. If it is parallel to the edge of the cone, you get a parabola. If neither is the case, it is an ellipse. The ellipse is also a circle if the plane is perpendicular to the altitude of the cone.
Note that none of these are the case if the plane passes through the vertex of the cone.
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THE COOLEST MATH SEARCH ENGINE - WOLFRAM ALPHA
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eg. 1) In the above field type:
factor x^2+5x+6
Then left click the equal sign.
eg. 2) In the above field type:
expand (3x-2)(4x+7)
Then left click the equal sign.
eg. 3) In the above field type:
solve 3x^2+2x-4=0 for x
Then left click the equal sign.
eg. 4) In the above field type:
together 1/(x+3)+3/(2x+7)
Then left click the equal sign.
eg. 5) In the above field type:
simplify (x^2+5x+6)/(x+3)
Then left click the equal sign.
eg. 6) In the above field type:
plot x^2, x=0..5
Then left click the equal sign.
Copy and paste the following symbols if you need them: π or θ
Use the caret symbol for a power, i.e. x^{2} can be written as x^2 and roots can be written with fractional powers.
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MATHEMATICA PLAYER
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Using Mathematica Player you can read or print any Mathematica notebook, viewing text,graphics, typeset math, and animations. You will be able to interact with Mathematica applications which you can download here. Choose the Mathematic's Category or any other category you find of interest.
MAKE SURE YOU HAVE INSTALLED THE MATHEMATICA PLAYER.
USE THE WINDOWS OR MAC LINK BELOW TO DOWNLOAD THE PLAYER TO INSTALL ON YOUR COMPUTER.
You will have to fill in a short form in order to get the Mathematica Player
Once you have downloaded and installed the Mathematica Player
test it with one of the files below.
Examples Of Mathematica Player Interactive Modules
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SAT STRUGGLES: NUMBER THEORY
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So what does it take to perform well on the Number Theory section of the SAT? There is NO one easy path and no instructional practices in and of themselves that will guarantee that a student will perform well on the Number Theory portion of the SAT. But, it is an absolute MUST that a student understand and memorize a number of arithmetic facts that demand time, effort and concentration - in effect, hard work - if a student is going to perform well on this section.
LEARN THESE NUMBER THEORY FACTS IF YOU WANT TO PERFORM
WELL ON THE NUMBER THEORY SECTION OF THE MATH SAT
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WHAT IS CURRENT IN BRAIN RESEARCH?
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Vilayanur S Ramachandran is Director of the Center for Brain and Cognition and professor with the Psychology Department and the Neurosciences Program at the University of California, San Diego. He is also Adjunct Professor of Biology at the Salk Institute. Professor Ramachandran's work has concentrated on investigating phenomena such as phantom limbs, anosognosia or denial of paralysis, Capgras syndrome, and anorexia nervosa. V.S.R. has written a number of fascinating books on brain functioning The research from these books has led to a deeper understanding of the nature of mathematical and metaphorical comprehension. Also consider watching the online videos on mathematics and brain research that I have linked here.
Below are the Reith Lecture's V.S.R. gave in 2003 in 5 parts.
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WHAT BROWSERS YOU WILL NEED HERE
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First, it is important that you have the proper web browser in order to use all the interactive features available here.
If you are a windows and/or mac user consider FIREFOX which will work with all the features here.
Internet Explorer is buggy and will not work well with the LIVE MATH modules that are embedded at this site.
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LEARN LATEX
A MATH MARKUP LANGUAGE
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LaTex is a document mark-up language used by mathematicians, scientists and engineers. LaTex enables math symbols and math notation to be used in textbook editors, and on the web with such programs as Google Docs, Moodle and GeoGebra.
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STATISTICAL DATA
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- GEOHIVE : A site with geopolitical data, statistics on the human population, Earth and more.
- GAPMINDER: Unveiling the beauty of statistics in a fact based world.
- NATIONMASTER : A massive central data source and a handy way to graphically compare nations. NationMaster is a vast compilation of data from such sources as the CIA World Factbook, UN, and OECD.
- CENSUS BUREAU : Serves as the leading source of quality data about the nation's people and economy.
- STATEMASTER : A unique statistical database which allows you to research and compare a multitude of different data on US states.
- WORLDOMETERS: World statistics updated in real time.
- DATAFINDER : A database with hundreds of variables for the US and the world.
...The Ratio Test: Part 1 : Part 2 : Part 3 : Part 4
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WHAT'S HAPPENING IN THE WORLD
OF MATH AND SCIENCE
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- THE HISTORY OF EAST INDIAN MATHEMATICS Part 1 : Part 2
- INFINITY AND BEYOND: Georg Cantor
...
By our third year, most of us will have learned to count. Once we know how, it seems as if there would be nothing to stop us counting forever. But, while infinity might seem like an perfectly innocent idea, keep counting and you enter a paradoxical world where nothing is as it seems.
Mathematicians have discovered there are infinitely many infinities, each one infinitely bigger than the last. And if the universe goes on forever, the consequences are even more bizarre.
- PBS's "Inside The Teenage Brain"
...In "Inside the Teenage Brain," FRONTLINE chronicles how scientists are exploring the recesses of the brain and finding some new explanations for why adolescents behave the way they do. Confronted by these new discoveries, academics, counselors, and scientists are divided on just what all this means for children. These discoveries could change the way we parent, teach, or perhaps even understand our teenagers.
Thanks for checking out Deeringmath.com. I hope you'll find this site helpful. Feel free to make any suggestions.
There are far too many people who have helped me over the years to thank. But thanks to all of you including the Portland Public School System for my job which has enabled me to follow my dreams.
And a special thanks to all my students who have cared and the parents who have supported me over the years.