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Posts tagged with algebra

Substituting – may the Algebraic Force be with you!

September16

This H3 ppt is free for download and distribution and is an introduction to the power of Algebraic Substitution – a critical skill for doing well in senior math. Here is the ppt: Substituting into an equation

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Algebraic Expressions and Main Operators

August29

A key knowledge of how Algebraic Expressions and Operators work is fundamental to improving grades in Middle School Mathematics – and really helpful for older students too! This free H3 Powerpoint explains the main definitions used in Algebra and also links to some interesting short videos. In addition (pun intended), the Powerpoint also has a […]

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You CAN learn Anything…

August20
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Substituting into an expression with accuracy

March18

It does sound easy, but many students lack accuracy when substituting values into an algebraic expression. H3 finds that there is greater success by using brackets when putting the values in. This will ensure that the signs are worked out correctly, using the BEMA rules! Here is an example: You can download the free ppt […]

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Mathematics Puzzles

November19

I don’t know about you, but solving puzzles is great mathematical fun, including the logic ones. This site by Maths is Fun has a range of great puzzles for you to try in your spare time!

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Getting Basic Algebra Skills with Dragon Box

November18

“This app is absolutely fantastic at teaching the fundamentals of algebra. I was surprised at how quickly my 7 year old progressed from avatar like dragons to negative numbers and pro numerals. Now to get my class onto this great app.”

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Why we love equations, especially simple ones!

September19

This 50min youtube video from the BBC is a great overview of the use of equations in Mathematics and Science. Click on the image of Einstein’s famous equation below to gain a greater understanding of the exciting world of equations (PS: first half of video is probably the best):

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Forever blowing bubbles, mathematically speaking…

June30

Robert I. Saye, a PhD student in applied mathematics, and James A Sethian, professor of mathematics at University of California, Berkeley, have come up with a set of mathematical equations to describe how the bubbles in foam rearrange themselves. The problem with describing foams mathematically has been that the evolution of a bubble cluster a few […]

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Get the Math

May22
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Algebra Study Tips

May3

Check out the Algebra Study Tips here: Example: “Never cheat on a homework assignment, regardless of how easy or how complicated the assignment is.  Homework is an excellent method of studying and it is assigned for a reason.  It is easy to forget a memorized solution, but it is much harder to forget a process for […]

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Largest number between o and 1 million which does not contain the ‘n’ is 88

 

Rotation SAT Problem: Answer: 4 (see: https://www.youtube.com/watch?v=FUHkTs-Ipfg)

 

Which number has its letters in alphabetical order? Answer: F O R T Y

Hidden Rabbit? Clue: check the trees

How long for the stadium to fill? 45 minutes.

Where are you? the North Pole

Prize Object Puzzle: If Sue does not know where the prize is in the first question, it can’t be under the square. She must have been told it is under another shape. Apply this same logic to Colin. It is then obvious that the prize cannot be under a yellow object. That helps Sue eliminate her yellow shapes. Got the idea?

Algebra Puzzle: Answer = 1

Popular Math Problems Answers: 1, 1

Number of tabs? According to Lifehacker, the ideal number of tabs you should have open is nine. Yes, a single digit. To some, this is like playing a piano and only using a fraction of the notes!

Worst Graph? Where to start. What a visual mess and even some of the lines merge and are impossible to follow. A graph is a visual display of data, with the goal to identify trends or patterns. This is a spider’s web of information which fails to show a clear pattern at all. Solution? Well, different colors would help, or why not group in two or three graphs where trends are similar?

Number of different nets to make a cube is eleven – see this link

Homework Puzzle; The total value of the counters is 486, so halve this to get 243. Now, arrange the counters to equal this amount twice.

The graph on the left (Coronavirus) is for a time period of 30 days, while the one on the right (SARS) is for 8 months! Very poor graphical comparison and hardly relevant, unless it is attempting to downplay the seriousness of the coronavirus?

10 x 9 x 8 + (7 + 6) x 5 x 4 x (3 + 2) x 1 = 2020

NCEA Level 2 Algebra Problem. Using the information given, the shaded area = 9, that is:
y(y-8) = 9 –> y.y – 8y – 9 =0
–> (y-9)(y+1) = 0, therefore y = 9 (can’t have a distance of – 1 for the other solution for y)
Using the top and bottom of the rectangle,
x = (y-8)(y+2) = (9-8)(9+2) = 11
but, the left side = (x-4) = 11-4 = 7, but rhs = y+? = 9+?, which is greater than the value of the opp. side??
[I think that the left had side was a mistake and should have read (x+4)?]

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