Download 5 - Denton ISD

Friday 10-4-13
Directions: Please come in and get your journal. On your next blank page, write
today’s date on the top line. Title this page ~ Unit 4 Test Review.
Below the date, write the Challenge Question.
Challenge Question: How can you determine if an answer is reasonable?
Warm-up (independent, level 0 noise):
Please complete this in your journal below the CQ
1.
2.
What is the value of the expression:
3½-2÷2+¼
Zoe uses 6 4/5 yards of fabric to make eight blankets. On average, how much
fabric does she use for each blanket?
Tuesday 10-8-13
Directions: Please come in and get your journal. On your next blank page, write
today’s date on the top line. Title this page ~ Coordinate Graphing.
Below the date, write the Challenge Question.
Challenge Question: Why do we need a universal, or common, way to describe
location?
Warm-up (independent, level 0 noise):
Please complete this in your journal below the CQ
1.
A bakery sold these numbers of cakes over the last 6 months.
12, 15, 15, 18, 9, 11
• Calculate the current mean of cakes sold over the last six months.
• How many cakes do they need to sell next month for the median number sold
per month to be 15?
A. 10 B. 12 C. 11 D. 17
The Coordinate Plane
5
1, 5
 4, 2
-5
5
 2,  2
-5
7,  1
Imagine the top surface of your
desk stretching in every direction.
If it continued to spread , it
would go right through
your neighbor . . .
. . . and then through the
classroom walls . . .
. . . and through the school and
the hills and the mountains and
out into space until it went on
forever in every direction.
Then you would have a plane.
In mathematics, a plane is a
flat surface that goes on
forever in every direction.
We call it the coordinate
plane.
The coordinate plane is
divided by two number lines.
One is horizontal, like the
number line you already
know.
-10
-5
0
5
10
The other is vertical, with up
being the positive direction
and down being the negative
direction.
5
-10
-5
0
-5
5
10
The origin is
the point where
the two number
lines meet.
-10
-5
The point of
5
origin is
(0,0)
0
-5
5
10
5
The horizontal number
line is called the x-axis
-10
-5
.
0
5
The vertical
-5
number line
is called the
y-axis.
10
To study a point, we need to
know where to find it. So we give
it coordinates.
Coordinates are like an address.
They tell you how you can get to
a point if you start at the origin.
Coordinates are
always written in
parentheses, with
the x-value first.
-10
-5
y
5
 x, y 
x
0
5
10
Coordinates written
in parentheses are
-5
called an ordered
pair.
Consider the point
which has
coordinates, (4, -2).
-10
-5
The first number
tells you how far
to move along
the x-axis.
5
0
-5
So the 4 in (4, -2)
says we need to move
4 units to the right.
5
10
Remember to start
at the origin!
The second number
tells you how far to
move up or down.
-10
-5
5
0
The –2 in (4, -2)
tells you to
move down two
units.
5
4,  2
-5
10
Labeling the 4 Quadrants.
II
,  
Quadrant 2
-10
,  
Quadrant 1
0
-5
III
I
5
,
Quadrant 3
-5
5
10
IV
,
Quadrant 4
Give the coordinates of each point:
 5,1
 3,  2
2, 3
2,  4
Plot each point and describe how to get
to the point from the origin.
1.
(8,–7)
From the origin, move to the right
8 units, then down 7 units.
2.
(4,0)
From the origin, move to the right 4
units, then stop (Stay on the x-axis.).
3.
(–4,–5)
From the origin, move to the left 4
units, then down 5 units.
4.
(0,–9)
From the origin, don’t move to the right or left (stay
on the y-axis), then move down 9 units.
5.
(7,12)
From the origin, move to the right
7 units, then up 12 units.
Thinking Together & Just for Me
• Complete your selected
coordinate graphing character
Ticket out the Door
Use your own words to explain what
each term means:
 Origin
 Quadrant
 Axis
 Coordinates
 Ordered pair