Welcome to H3 Maths

Blog Support for Growing Mathematicians

Posts tagged with algebra

Changing the Subject

March27

Up for free use is the following powerpoint, designed for middle grade Mathematicians, called “Changing the Subject” (Algebra basics). Download, enjoy and share. Changing the subject

by posted under Uncategorized | tagged under , , ,  |  Comments Off on Changing the Subject

How Imaginary Numbers Were Invented

January20

Well, there is more to this excellent video than just Imaginary Numbers; it also plots an excellent course through the history and development of Mathematics, complete with maps, etc. H3 gives it 5-stars, a Must View.

by posted under Uncategorized | tagged under , , , , , , ,  |  Comments Off on How Imaginary Numbers Were Invented

The Collatz Conjecture – simple math problem no one can solve!

August8
by posted under Uncategorized | tagged under , , ,  |  Comments Off on The Collatz Conjecture – simple math problem no one can solve!

Another Algebra Puzzle

June16

These Algebra Puzzles seem to crop up from time to time. However, if you are following the rules of operations (see BEMA post), the logic rules and the answer is easy. A reminder: B E M A means we solve in this order—Brackets first, then Exponents (or powers. There are none in this question); Multiplication/Division; […]

by posted under Uncategorized | tagged under , , ,  |  Comments Off on Another Algebra Puzzle

6 Good Reasons to Like Algebra

September5

1) Algebra is Faster And Better Than “Basic” Math Just as multiplying two by twelve is faster than counting to 24 or adding 2 twelve times, algebra helps us solve problems more quickly and easily than we could otherwise. Algebra also opens up whole new areas of life problems, such as graphing curves that cannot […]

by posted under Uncategorized | tagged under , ,  |  Comments Off on 6 Good Reasons to Like Algebra

Value of Zero to the Power of Zero?

April30

Eddie Woo takes his students on a cool math adventure with their calculators to find out the value of zero to the power of zero!

by posted under Uncategorized | tagged under , , , , ,  |  Comments Off on Value of Zero to the Power of Zero?

Can you Find the Algebra Exam Error?

November25

In a Level 2 Algebra Exam, held in New Zealand recently, students (and teachers) were flummoxed by some of the questions. Can you spot the error in this one? (Answer in Blog Support shortly)?

by posted under Uncategorized | tagged under , , , ,  |  Comments Off on Can you Find the Algebra Exam Error?

The Wisdom of Earl

October26

H3 was enjoying meeting up with Earl in Montana. Montana is Big Sky country and Earl has a big heart for helping students with their math – which is the subject we naturally focused on after a while (there was hay to feed to the horses and some garden crops to pick first). I mentioned […]

by posted under Uncategorized | tagged under , , , , , , ,  |  Comments Off on The Wisdom of Earl

Instant solutions at mathway.com

October17

Mathway boasts that it “provides students with the tools they need to understand and solve their math problems. With millions of users and billions of problems solved, Mathway is the #1 problem solving resource available for students, parents, and teachers.” What does H3 think? Yes, this is a useful problem-solving tool and the graphical functions […]

by posted under Uncategorized | tagged under , , , ,  |  Comments Off on Instant solutions at mathway.com

Problem-Solving Problems

July18

Check out the sets of problem-solving questions on the NZMaths website. Copymasters are included and there are excellent problems for all levels, covering Algebra, Measurement, Geometry, Statistics, etc. Here is one example, from Level 2: “There are 2 pirates and 4 treasure chests on an island. The pirates have 1 small boat to take the […]

by posted under Uncategorized | tagged under , , , , , ,  |  Comments Off on Problem-Solving Problems
« Older Entries

Post Support

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)?]

Archives

H3 Viewers



Skip to toolbar