Learning Goals amp Standards Learning Goals Apply measurement and conversion skills Standards S7CS1 Students will explore the importance of curiosity honesty openness and skepticism in science and will exhibit these traits in their own efforts to understand how the world works ID: 737927
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Slide1
MeasurEment
7
th
Grade Life Science Slide2
Learning Goals & Standards
Learning Goals:
Apply
measurement and conversion skills
.
Standards:
S7CS1: Students will explore the importance of curiosity, honesty, openness and skepticism in science and will exhibit these traits in their own efforts to understand how the world works.
understand the importance of --- and keep--- honest, clear, and accurate records in science.
S7CS4: Students will use tools and instruments for observing, measuring, and manipulating equipment and materials in scientific activities.
Use appropriate tools for measuring objects and/ or substances. Slide3
How is math and/or science depicted in this picture?Slide4
What measurements do we use?
OPEN DISCUSSION
Why is measurement important?Slide5
History of Measurement
Measurements have not always been standard. Many civilizations created systems of measurements that were limited in use. Many of the systems lacked uniformity and weren’t always observed by others.
How do you think ancient civilizations were able to measure items?
What tools would you suspect these ancient civilizations used for measuring?
What do you think would be possible problems with multiple measurement systems?
What are possible solutions to the problem of multiple systems?Slide6
History of Measurement Continued
Metric system and the English (standard) system
https://
www.youtube.com/watch?v=DQPQ_q59xyw
During ancient periods, what tools where available for measurement?
If you lived during an ancient period, what system would you have developed to promote uniformity?
Obtain a copy of the Measurement Scavenger Hunt Cornell NotesSlide7
Measurement Scavenger Hunt: Cornell Notes
Essential Question:
What are the English and SI (metric) systems and how do they compare? Slide8
Measurement Cornell Notes
What is a standard?
A
standard is considered a basis of comparison
.
Examples: A standard sized football; a standard sheet of paper.
Are there any other examples you can think of? Slide9
Measurement Cornell Notes
Why is it important to have standard measurement units?
Standard measurement units ensures that all measurements have a set value and may be compared to other measurements
.
Example: 8 ounces of lotion is the same regardless of the brand purchased.
The English system of measurement was originally based on
common objects
.
Examples:
Inch=
3 barleycorns laid end-to-end
Yard=
Length between the nose and fingertip of an outstretched arm of King Henry I of England
Stone=
weight of certain stones determined by individual English cities.
The metric system (System International or SI) was developed by the
French
, is based on
facts of nature
and has units that are
multiples of 10 of each other.
Slide10Slide11
Measurement Cornell Notes
Why is it important to have standard measurement units?
The metric system was developed by the
French
, is based on
facts of nature
and has units that are
multiples of ten of each other
.
Examples:
Meter=
the distance light travels through a vacuum in 1/299,792,458 of a second.
Centimeter=
1/100 of the length of a meter
Liter=
cubic decimeter(10cm length x 10cm width x 10cm height) or 1000 cubic centimeters
Kilogram=
Mass of the standard kilogram, a platinum- iridium cylinder kept in Sevres, France
(Note: Students write kilogram on your paper below liter because it is missing from your Cornell Notes handout)Slide12Slide13
Measurement Cornell Notes
Why is it important to have standard measurement units?
Basic SI units and prefixes:
Basic Unit
English Comparison
Prefixes
Mass
Kilogram
2.2 pounds
g=
1/1000 kg 1cg=1/100 g
1mg=1/1000g
Length
Meter
39 inches
cm=1/100m
1mm=
1/1000m
1000m=1 km
Volume
Liter
0.264172 gallons
cL
= 1/100L
1ml
= 1/1000L
1000L= 1kLSlide14
Measurement Cornell Notes
Other English- SI comparisons:
1 inch= 2.5 cm
1 gram= mass of a paper clip
1mL= 1/5 of a teaspoon
1m= 1 yard + 3 inches
2L = soft drink bottleSlide15
Measurement Cornell Notes: Summary
In your own words summarize what you have learned.
Hint:
T
ry to develop a short answer to our essential question (located at the top of our Cornell Notes) Slide16
Measurement Scavenger Hunt Activity
Turn over to the back side of your Cornell Notes Handout.
With a partner, you will suggest items in the classroom that fits each measurement listed in the table (without measuring)
Write the items that you identify in the first column to the left of the specified length.
Obtain a ruler and return to the identified items, Measure the item and write the value in the Actual length column beside the specified item.
In the column that reads inches, you will convert cm, m, mm to inches ( do as many as you can utilizing the conversions from your Cornell Notes.
In the last column, Difference, you will subtract the actual length from the length.
For example: you identified an
iphone
to be 22cm but after measuring you determine the length to be 17.5cm your data table would be completed as
shown in the table below.
Item
Length
Actual Length
Inches
Difference
iphone
22cm
17.5cm
7in
= 7inch
22cm-17.5
cm= 4.5cm
(length – actual length= difference)
Item
Length
Actual Length
Inches
Difference
iphone
22cm 17.5cm22cm-17.5cm= 4.5cm (length – actual length= difference)Slide17
Lets get started!
Ask questions if needed!!!
(Remember three before me)