ource/vtl07.math.number.nums.me asuredeb
DESCRIPTION
Measure the following objects in your bags with your group members. Length of the blue calculator (in inches) ____________ Diameter of the fraction circle (in inches) ____________ Length of the screw (in centimeters) ____________ Width of the cube (in centimeters) ____________ Length of the pencil (in inches) ____________ Length of the marker (in inches) ____________ Diameter of the nickel (in centimeters) ____________ Length of the toothpick (in centimeters) ____________ Length of the clear plastic tab (cm) ____________ Width of the clear plastic tab (cm) ____________TRANSCRIPT
http://www.teachersdomain.org/resource/vtl07.math.number.nums.measuredeb/
Using Your Ruler
Using Your RulerMeasure the following objects in your bags with your group members. • Length of the blue calculator (in inches) ____________• Diameter of the fraction circle (in inches) ____________• Length of the screw (in centimeters) ____________• Width of the cube (in centimeters) ____________• Length of the pencil (in inches) ____________• Length of the marker (in inches) ____________• Diameter of the nickel (in centimeters) ____________• Length of the toothpick (in centimeters) ____________• Length of the clear plastic tab (cm) ____________• Width of the clear plastic tab (cm) ____________
1. Length of the blue calculator (in inches) ____________2. Diameter of the fraction circle (in inches) ____________3. Length of the screw (in centimeters) ____________4. Width of the cube (in centimeters) ____________5. Length of the pencil (in inches) ____________6. Length of the marker (in inches) ____________7. Diameter of the nickel (in centimeters) ____________8. Length of the toothpick (in centimeters) ____________9. Length of the clear plastic tab (cm) ____________10.Width of the clear plastic tab (cm) ____________
Using Your Ruler
Real Numbers and Number LinesReal Numbers and Number Lines
The number that corresponds to a point on a number line is called the_________ of the point.coordinate
On the number line below, __ is the coordinate of point A.
The coordinate of point B is __
Point C has coordinate 0 and is called the _____.
-4
10
origin
x
11-5 -3 -1 1 3 5 7 9-6 -4 0 4 8-6 2 106-2
AB C
x
11-5 -3 -1 1 3 5 7 9-6 -4 0 4 8-6 2 106-2
Look at the coordinate points below. What is the distance of segment DE?
What is the distance of segment EF?
What is the distance of segment DF?
D E F
You can also use number lines to find the distance between points, just like a ruler.
Real Numbers and Number LinesReal Numbers and Number Lines
The distance between two points A and B on a number line is found byusing the Distance Postulate.
Postulate:DistancePostulate
Points on a line are paired with real numbers, and the measure ofthe distance between two points is the positive difference of the corresponding numbers.
measure = a – b
B A
ab
Real Numbers and Number LinesReal Numbers and Number Lines
x
11-5 -3 -1 1 3 5 7 9-6 -4 0 4 82 106-2
AB
10 2AB
8
8
2 10BA
8
8
1 2 43 5 76 8 9 10 11
What is the distance of segment XY on the line below?
X Y
220 380
Calculate by subtracting and then taking the absolute value.
220 – 380 = -160
Absolute Value of -160 = 160
M N O
-21 -11 6
Real Numbers and Number LinesReal Numbers and Number Lines
Traveling on I-70, the Manhattan exit is at mile marker 313.The Hays exit is mile marker 154.
What is the distance between these two towns?
313 154
159
159 miles
MH
http://www.michigan.gov/mdot/0,4616,7-151-9622_11033_11151-65571--,00.html