Septemeber 30th Homework

Today's homework is giving direction from point A(3,9) to the origin using a rotation, reflection, and translation. If you are able to get on http://www.mytextbook.ca/ then continue to work on the questions from Friday.

Also there is a quiz tomorrow on number of the day and the coordiante grid. Be sure to study.

Blog Rules

We must remember that our blog is seen around the world and therefore we must represent ourselves and our school with pride.

The shout box is a place where we can ask questions, answer questions, and help each other. In order to do so we must use appropriate language. We must use complete sentences. We do not want to use text language or computer language, no lols.

Only use your fist name and room number. If there are two students with the same first name in the same class they can use the number 1 or 2 after their name based on alphabetical order.

Please represent yourselves and our school with pride and respect.

Movements on a grid

Horizontal movements are described using left and right.

Vertical movements are described using up and down directions.

In all cases a unit of measurement must be used. Centimeters, millimeters, kilometers,... etc.

Default wording is simply units.


eg. four units up and to units left.

Be sure you can describe the movements of shape or point.

Remember all three transformations: translation, reflection, and rotation.

Homework for today Sept. 28

Check http://www.mytextbook.ca/ try to login using your personel user name and the password.
Finish any questions you did not complete from Friday. Pg 15-17 # 3-14 and pg 24-29 # 3-25
I will be checking homework on Wednesday.
Answer questions 10, 11, 12, and 13 of all old pages in your number of the day booklet.

Be ready for some really difficult transformations.

Number of day product

Product is the answer to a multiplication question.

eg. the product of 2 and 3 is 6.

the product of 2, 4, 3, is 24.

Number of the day question 12

You must use a calculator and refer back to your notes for place value and rounding.
If you have questions be sure to see me at lunch!

More number of day squaring

11. square the digit in the hundreds place.

squaring is multiplying the number by itself.

2 diemnsions

eg. four squared is 4x4=16

More number of day notes: cubing

10. Cube the digit in the ones place.


Cubing is multiplying a number by itself 3 times.


A cube has three dimensions ( length, width, depth)












eg. five cubed is 5x5x5







not 3x5 or 5x3

Transformations

Transformations are moving of a geomatric figure (shape). There are three types: translation, reflection, and rotation.

A translation is a slide along a straight line.

A reflection is a mirror image. A mirror line is called a line of reflection.

A rotation is a turn about a fixed point called the centre of rotation.

Today's HW

Coordinate grid

A vertex is a point where two sides of a figure meet. Plural form is vertices.

Make sure you can label a grid and identify coordinates of vertices.

Try this link for more practise!

You have a quiz on Thursday. If you are having a troubles be sure to see me at lunch time in room 44.

Doubling a number

To double a number you can multiply by 2
you can add the number to itself
or you can double each digit in the number and add them all up.

Place Value

Use this place value chart to help you remember which each column is worth.

Rounding

We round numbers to estimate or simplify.
Step 1: circle the digit in the place value you are asked to round to.
eg. round to the nearest ten in this case you would circle the 3 in the number 432.7
Step 2: underline the digit one place value to the right of the circled digit, in the above example you would underline the 2.
Step 3: if the underlined digit is 5 or higher the circled digit goes up 1
if the underlined digit is 4 or lower the circled digit stays the same
Step 4: All insignificant digits are changed to zeros they just hold place value
do not include zeros after the decimal unless they are holding place vaule.
eg. 0.0003 these zeros are holding place value
0.3000 these zeros are not holding place value

you try 8964 round to the nearest thousand
29 round to the nearest ten
419.4 round to the nearest one
289.456 round to the nearest hundredth

More number of the day notes

Review half a number
- divide by 2
- make two equal parts
- find half of each digit
eg. 1749.863
half of 1000 is 500
half of 700 is 350
half of 40 is 20
half of 9 is 4.5
half of 0.8 is 0.4
half of 0.06 is 0.03
half of 0.003 is 0.0015
add them all 874.9315

You try 2579.357

Expanded Form Review
Write the true value of each digit.
eg. 2468.123
2000+400+60+8+0.1+0.02+0.003

Written Form Review
Write the number as it is said using only words. Remember that a decimal is said "and".
eg. two tousand four hundred sixty eight and one hundred twenty three thousandths.

Quiz

1. Find 15% of 150.
2. 2839.716 what digit is in the tenths place?
3. Which fraction has a higher value, one half or one third?
4. What is 67 plus 76?
5. What is 7 subtract 9?
6. What is 21 multiplied by 17?
7. What is 42 divided by 6?
8. What is one fifth plus one fourth simplified?
9. How often do you have to run cross country?
10. When is the math help room open?
11. When do you do number of the day?
12. What is the math blog address?
13. What N.F.L. team should you cheer for?
14. When should you hand in your sports fund?
15. Which quadrant are the coordinates (-4, 7) in?
16. What is another name for a Cartesian plane?
17. What are the coordinates of point A?
18. What are the coordinates of the origin?
19. What are the coordinates of point B?
20. Which quadrant has the signs of (-,-)?

Make sure you are in at lunch to get any help you need.

Cartesian Plane or Coordinate Grid

A Cartesian Plane is formed when a vertical (up and down) number line meets a horizontal (sideways) number line.

X-axis is the horizontal number line on a coordinate grid.

Y-axis is the vertical number line on a coordinate grid.

Origin is the point where the x-axis and the y-axis meet or intersect.

Quadrants are the four regions on the coordinate grid. They are labled using Roman numerals starting in the top right (I) working counter clockwise top left (II) bottom left (III) bottom right (IV)

Coordinates are the values in an ordered pair. The x value is always listed before the y value.

eg. (4,2)

Number of the Day, Written form

Written form is a a number written using words the way we say it.

Remember that and means decimal.

eg.

3286 is standard form.

three thousand two hundred eighty six is written form.

7541.396 standard form

seven thousand five hundred forty one and three hundred ninety six thousandths.

Number of the Day Scribepost

Expanded Form.

Expand- to make bigger. Only the size of the number changes not the value.

Form - another way to write the same number.

eg. 1234 is written in standard form.

1000 + 200 + 30 + 4 is written in expanded form.

9876.543 is standard form.

9000 + 800 + 70 + 6 + 0.5 + 0.04 + 0.003 is expanded form.

Expanded form is writing the true value of each digit.

Number of the Day Scribepost

Finding half of a number.

We need to find two equal pieces.

One half can be represented in several ways: fraction, decimal percent, picture, and words.

Think of an example for each way to represent one half.

The easiest way to find one half is to divide by two. Dividing by two is another way to say get two equal groups or parts.