RATIO!
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We are starting on a new topic-ratio!
This symbol is probably the most famous ratio any living human being knows even if they are not mathematicians.
Can you guess what this symbol means?
More importantly, what does it stand for?
When did it start?
Who uses this?
This symbol is probably the most famous ratio any living human being knows even if they are not mathematicians.
Can you guess what this symbol means?
More importantly, what does it stand for?
When did it start?
Who uses this?
Online ebook!
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Have you received the online activation code to gain access to our online book?! Create your own student account and be able to use our online ebook, online tutor, animated math, extra exercises and many more. Go the the Classzone website for further details.
FRACTIONS!
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If you want to have fun and learn some key fraction skills, why not try this website:
http://www.funbrain.com/fractop/index.html
http://www.funbrain.com/fractop/index.html
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What is the Sieve of Eratosthenes?
A prime number is a natural number greater than 1 that can be divided without remainder only by itself and by 1. Natural numbers n that can be divided by a number less than n and greater than 1 are composite numbers. The Sieve of Eratosthenes identifies all prime numbers up to a given number n as follows:
http://www.math.utah.edu/~pa/Eratosthenes.html
What is the Sieve of Eratosthenes?
A prime number is a natural number greater than 1 that can be divided without remainder only by itself and by 1. Natural numbers n that can be divided by a number less than n and greater than 1 are composite numbers. The Sieve of Eratosthenes identifies all prime numbers up to a given number n as follows:
- Write down the numbers 1, 2, 3, ..., n. We will eliminate composites by marking them. Initially all numbers are unmarked.
- Mark the number 1 as special (it is neither prime nor composite).
http://www.math.utah.edu/~pa/Eratosthenes.html
![Picture](/uploads/9/2/7/5/9275303/1320493002.jpg)
Area and Perimeter
One application for multiplication of decimals is computing for area and perimeter of figures. We have started with squares and rectangles.
Here are 2 websites that can help beginners practice: http://www.mathplayground.com/area_perimeter.html
http://www.funbrain.com/cgi-bin/poly.cgi?A1=s&A2=0&A15=2&Submit=Start+Digging%21
Have fun!
One application for multiplication of decimals is computing for area and perimeter of figures. We have started with squares and rectangles.
Here are 2 websites that can help beginners practice: http://www.mathplayground.com/area_perimeter.html
http://www.funbrain.com/cgi-bin/poly.cgi?A1=s&A2=0&A15=2&Submit=Start+Digging%21
Have fun!
Magic Squares
![Picture](/uploads/9/2/7/5/9275303/89615.jpg)
One way to practice what we know with decimals is to have fun with it. The magic square is one way of having fun with multiplication of decimals. Normally, a square is given with no numbers inside. The numbers outside the square stands for the product of the factors which we must guess. A good knowledge of the rules of multiplication will help you make a good guess what numbers you may put in the box. This first box has been answered for you to show an example. Let us see if you can solve the next 2 magic squares.
Math!
After 1 quarter, we have learned place value, ordering, rounding, order of operations, addition and subtraction of decimals. We also learned the scientific notation. We are proud to say we have started to learn how to solve mentally! We have been practicing how to add and subtract decimals without any help from calculators, pen and paper. Some have become masters in mental computations.
As we move on, we will be handling the remaining 2 operations for decimals: multiplication and division. Having a projector can really help us understand some concepts through PowerPoint Presentations, speed things during mental computation and help us see better during our Round Robin Activities.
After 1 quarter, we have learned place value, ordering, rounding, order of operations, addition and subtraction of decimals. We also learned the scientific notation. We are proud to say we have started to learn how to solve mentally! We have been practicing how to add and subtract decimals without any help from calculators, pen and paper. Some have become masters in mental computations.
As we move on, we will be handling the remaining 2 operations for decimals: multiplication and division. Having a projector can really help us understand some concepts through PowerPoint Presentations, speed things during mental computation and help us see better during our Round Robin Activities.