Math Playground

Try some of these games, during your long weekend.

http://www.mathplayground.com/

Solving Equation

Equation
Mathematical statement with two expression that have the same value.

x + 2 = 3

j-7=4 1+1=2 b=4 3a-2=a+2 4=4

+ oooo

c=4



2c=3




Writing expression- An expression can be written using a single construct, a single variable a combination of operation with construct variable, or numeral coefficient.

2 y-7 4+3=7 1c+3=7 3c-5 2c+4=10 3x+2=11


Sorry would not work here is the link.
http://www.youtube.com/watch?v=G6fPIVeS_-A

Diamond Graph

As you can see this is a diamond graph.

Philly woke up this morning and checked his bank account he had ___ dollars he bought a shirt online affecting his account by ___ leaving him with ___. He then went to breakfast that affected his account by ___ leaving him with ___. The job he has paid him ___. How much does he have?

Practice

Just trying something out.

http://www.kcchiefs.com

1. 5-2=3 When subtracting some thing that is'nt there use zero pairs

2. (-5)-(-3)=-2

3. 2-5=-3

4. (-1)- (-3)=2

5. (-7)-(-3)=-4

6. 3- (-4)= 7

7.(-6) - 2 =-8

8.(-2)-(-5)=3

This morning it was -2. This afternoon will be 3. Determine the difference of these temps.

Method 1 Subtract this morning from the afternoon.

Method 2 Subtract the afternoon temp from this mornings temp

3-(-2)=5 (-2)-3=-5

327 1-21 HOMEWORK

http://www.youtube.com/watch?v=yteDWPyeNYI Go to this link. Sorry video did not work.

Using a number line to add integers

(+2) + (+3) = 5

(-4) + (-2) = -6

3 + (-2) = 1

(-5) + 4 = -1


Positive numbers move right

Negative numbers move left

Number line can be vertical























TEXBOOK:
PG. 319 - 322
# 1 - 23

HOPE THIS HELP! (:

Integers April 13th, 2010

ID the pattern write a chart, create algebraic equation.

The pattern on the right adds four all the time.

The pattern on the left adds one all the time.

To find how much sticks it takes to make one

house , you how to multiple by 4 and add 1

eg.

1x4=4 2x4=8 3x4=12

4+1=5 8+1=9 12+1=13

5=5 9=9 13=13

How many sticks does it take to make 211 houses?

211 211x4=844

200x4=800 844+1=845

11x4=44 845=845

800+44=844

Integers Cont.

zero pair-a pair of integer chips with one chip representing +1 and one chip representing -1

eg.

Opposite integers - two integers with same numeral but different signs (+,-)

eg.

Show using chips:

Homework: Page 313 - 315

Questions 1 - 20

Integers

Integers- are positive and negative whole number and zero
eg. 2, -6, 91, +103, -1000,0
Not Integers, 3/4, +1/2, 4/5, 0.1, -0.7, 91.3, 1:3, 95%, -60%


Integers are shown on a numberline or using interchips.



H.W.

1. I.D. each integer

a. •
b.•
c. • • •
d. • • • • •
e.• • • • • • •
f. • • • • •

2. Represent each integer with chips and on the number line

a. +2
b. 6
c. -4
d. +7
e. -6
f. 8

How To Create A Circle Graph

Step 1- Construct a circle using a piece of string, a compass, or you can also trace a circle using any type of circular objects

Step 2- Create the central angles

- A central angle is an angle formed by 2 radii and the vertex of the angle is located at the centre of the circle

Now that you know how to create a circle graph, its time to put your knowledge to the test!!

Here is an example of a set of information we received and had to convert into a circle graph.

Mr. Isfeld surveyed 100 kids on what kind of flavor they liked to eat. 50% of the kids liked If I Had A Million Flavors, 25% liked vanilla, and 25% liked some other flavor.

Construct a circle graph for the following.

• 3 kids use the computer 1-3 days per week.
• 9 kids do not use the computer at all that week.
• 18 kids use the computer 4 or more days on the computer.

Step 1- Find the total number of kids

3+9+18=30

Step 2- Convert the fractions to a percentage

3/30= 1/10= 10/100 = 10%

9/30= 3/10= 30/100 = 30%

18/30= 6/10= 60/100= 60%

There are other methods to turn a fraction into a percentage, but I suggest you to use the method that you are most comfortable with.

Step 3- Convert the percentage to degrees

10% of 360 degrees= 36 degrees

30% of 360 degrees= 108 degrees

60% of 360 degrees= 216 degrees

Use a protractor to measure the central angles for the most accurate results.

If you would want to go in depth about circle graphs. There are some links provide below to help you explore the concept of circle graphs. I recommend you to watch the video and play around with the websites to understand why is that fraction equivalent to that angle and many other questions you may have. If the still can not understand something after exploring the websites and watching the video then you should grab a lunch and talk to Mr. Isfeld about your problem or he is open during the morning and after school too.

Videos:

• http://www.youtube.com/watch?v=ZyikYkjyBT8

Websites:

• http://www.shodor.org/interactivate/activities/PieChart/
• http://nces.ed.gov/nceskids/createagraph/
• http://mathplayground.com/alienangles.html