Learning goal: Make accurate and precise measurements
using proper significant figures when collecting and
organizing data.
Page 32
Monday August 15, 2016
4
Warm-up: Copy the letters below. What do they stand for
K
King
Kilo
H
Henry
Hecto
D
Died
Deca
B
By
Base
D
Dirking
Deci
C
Chocolate
Centi
M
Milk
Milli
Meters
Liters
Grams
1. Use the letters to determine how many millimeters are in a kilometer
2. Use proper values to express the number of “millimeters per kilometer” as a
mathematical statement.
Evaluate
based on
A&P
3
Distinguish
A&P in
data
2
Importance
of A&P
1
Define
A&P
Learning goal: Make accurate and precise measurements
using proper significant figures when collecting and
organizing data.
Page 32
Monday August 15, 2016
Learning goal: Make accurate and precise measurements using proper
significant figures when collecting and organizing data.
4
Evaluate
based on
A&P
Learning scale:
1
2
3
4
Supporting or
Explain the
Differentiate
importance of
between accuracy rejecting a hypothesis
accuracy and
and precision when based on the accuracy
precision of data
precision
in scienceat home
measuring
andend ofand
Student’s self-evaluation:
Complete
or at the
class,
use the
in an investigation
calculating
4-3-2-1-0 system of understanding
Define accuracy
and precision
Student’s self-evaluation: Complete at home or at the end of class, use the
4-3-2-1 Learning scale (two to three sentences).
Homework: None.
3
Distinguish
A&P in
data
2
Importance
of A&P
1
Define
A&P
Learning goal: Make accurate and precise measurements
using proper significant figures when collecting and
organizing data.
Page 33
Monday August 15, 2016
4
Intro to analysis
Question #3
Scientists estimate that the Pacific Plate, one of Earth’s tectonic plates, has moved about
1,060 kilometers in the past 10.3 million years. What was the average speed of the
Pacific Plate during that time period, in centimeters per year?
Step 1: summarize what you know mathematically
“1,060 km per 10.3 million years” = “1,060 km ÷ 10,300,000 million years”
Need to go from “1,060 km ÷ 10,300,000 million years” to “cm ÷ year”
There are 100,000 cm ÷ 1 km (K H D B D C M)
1 km
x
1,060 km
10,300,000 years
=
106,000,000 cm
10,300,000 years
3
Distinguish
A&P in
data
2
Importance
of A&P
1
Set up the Dimensional Analysis equation:
100,000 cm
Evaluate
based on
A&P
Define
A&P
= 10.29 cm per year
Learning goal: Make accurate and precise measurements
using proper significant figures when collecting and
organizing data.
Page 33
Monday August 15, 2016
4
Intro to analysis
Question #2
On an architect’s drawing of the floor plan for a house, 1 inch represents 3 feet. If a
room is represented on the floor plan by a rectangle that has sides of lengths 3.5
inches and 5 inches, what is the actual floor area of the room in square feet?
Step 1: summarize what you know mathematically
“3 feet per 1 inch” = “3 feet ÷ 1 inch”. “3.5 inches per 1 side” and “5 inches per 1 side”
3 feet
1 inch
3 feet
1 inch
x
x
3.5 inches
1 side
5 inches
1 side
=
=
Area = 10.5 feet x 15 feet = 157.5 feet
10.5 feet
1 side
15 feet
1 side
3
Distinguish
A&P in
data
2
Need to go from “inches per side ÷ 1 side” to “feet ÷ 1 side”
Set up the Dimensional Analysis equations:
Evaluate
based on
A&P
Importance
of A&P
= 10.5 feet per side
= 15 feet per side
1
Define
A&P
Learning goal: Make accurate and precise measurements
using proper significant figures when collecting and
organizing data.
Page 33
Monday August 15, 2016
Intro to analysis
Question #1
On Thursday, 240 adults and children attended a show. The ratio of adults to
children was 5 to 1. How many children attended the show?
4
Evaluate
based on
A&P
3
Distinguish
A&P in
data
Step 1: summarize what you know mathematically
“5 Adults per 1 Child” = “5 Adults ÷ 1 Child”.
Set up Dimensional Analysis equations to determine….
1. How many Children will be at a show with 150 adults
2. How many Adults will be at a show with 50 Children
1 Child
5 Adults
5 Adults
1 Child
x
x
150 Adults
1 Show
50 Children
1 Show
=
=
150 Children
5 Shows
250 Adults
1 Show
2
Importance
of A&P
= 30 Children per Show
= 250 Adults per Show
1
Define
A&P
Learning goal: Make accurate and precise measurements
using proper significant figures when collecting and
organizing data.
Page 33
Monday August 15, 2016
Intro to analysis
Question #3A
Scientists estimate that the Pacific Plate, one of Earth’s tectonic plates,
has moved about 1,060 kilometers in the past 10.3 million years. What
was the average speed of the Pacific Plate during that time period, in
centimeters per year? Determine how many miles per year the plate is
moving if there are 1.6 km per 1 mile.
4
Evaluate
based on
A&P
3
Distinguish
A&P in
data
2
Importance
of A&P
1
Define
A&P