April 20, 2012 - Archimedes the Great Mathematician

Check out this interesting video on Archimedes and his discoveries!

http://www.youtube.com/watch?v=OYG23J-hQ4M&safety_mode=true&persist_safety_mode=1&safe=active

April 12, 2012 - Adding and Subtracting Integers

Check out this great video on Adding and Subtracting Integers. (Khan Academy)

http://www.youtube.com/watch?v=C38B33ZywWs&safety_mode=true&persist_safety_mode=1&safe=active

April 2, 2012 - Subtracting Integers

Your Task... You will use the skills you have learned during this period to solve a challenging question involving Integers!

Instructions;
1) Click on the link to the Math Makes Sense tutorials available on the "Cool Math Links" section of the blog.
2) Watch the tutorial entitled "Subtracting Integers with Tiles".
Optional - Watch the tutorial entitled "Subtracting Integers".
3) Complete the Quiz.
4) Solve the Integer Problems!! provided in class  - we will review this tomorrow.  If it is not completed in class it is considered homework.

Extension - Integers and Algebra - Euchlid's Theory

Read over the article available on the link below. (Values are substituted for the variables that make the expression true.)

                         http://nrich.maths.org/1357


Questions
First we notice that 13x+29y=42 has many solutions, for example x=1, y=1 and x=30, y=−12. Can you find others (it has infinitely many solutions)?

2x+4y=13 has no solutions because 2x+4y must be even and 13 is odd. Can you find another equation that has no solutions?

Post your solutions!!!

March 30, 2012 - Unit 9 Integers!!!

1) Define and provide an example for each of the Key Terms at the beginning of Unit 9.
- HWK Check on Monday.

2) Review the Tutorial for "What is an integer" and "Adding Integers".
Optional - Review the tutorial on "Comparing and Ordering Integers".
a) Complete the Quiz at the end of each tutorial.
b) Use the skills that you have learned to solve the problems  assigned to you. (The first two letters in your name are above the two questions that you are asked to solve.)

Tutorial Link - if the link doesn't work, just copy it to the browser and press enter.
               
                          http://www.pearsoned.ca/school/math/mathmakessense7/

Integer Problem - Post your answers as a comment on our blog.
Ph.
a) (+10) + __ = +25
b) (+4) + (+3) + (-6) =
Ni.
a) -20 + __ = +15
b) -2 + (-4) + (+1) =
Er.
a) +35 + __ = +17
b) +12 + (-3) + (-2) =
Ma.
a) (-10) + __ = (-25)
b) -2 + (-4) + (+1) =
Ka.
a) (-20) + __ = -15
b) +6 + (-8) + (+12) =
Me.
a) -35 + __ = +17
b) -5 + (-8) + (-10) =

March 29, 2012 - Do you have the answer?

If you wrote all the numbers from 300 to 400 on a piece of paper, how many times would you have written the number 3?

March 29 - interesting Method used to solve Percent Problems!!!

Click on the link below to view a demonstration of the "Grid Method". View the demonstration and solve the problems included using this method.  Once you are done, post a comment about it. Do you like it? What are some of the things that you like about it?  What do you dislike about this method?

http://www.wisc-online.com/objects/ViewObject.aspx?ID=ABM801