Calculating Water Around the World Anna Brainerd Let’s explore the world’s water while reviewing...
-
Upload
aleesha-west -
Category
Documents
-
view
216 -
download
0
Transcript of Calculating Water Around the World Anna Brainerd Let’s explore the world’s water while reviewing...
![Page 1: Calculating Water Around the World Anna Brainerd Let’s explore the world’s water while reviewing percentages, ratios, and fractions!](https://reader036.fdocuments.us/reader036/viewer/2022062804/56649d845503460f94a6a46a/html5/thumbnails/1.jpg)
Calculating Water Around the World
Anna Brainerd
Let’s explore the world’s water while reviewing percentages, ratios, and fractions!
![Page 2: Calculating Water Around the World Anna Brainerd Let’s explore the world’s water while reviewing percentages, ratios, and fractions!](https://reader036.fdocuments.us/reader036/viewer/2022062804/56649d845503460f94a6a46a/html5/thumbnails/2.jpg)
Content Area: Mathematics
Grade Level:6
Summary: Using water facts, students will apply their knowledge of percentages, ratios, and fractions.
Target: Given facts about water, students will be able to answer questions about percentages, ratios, and fractions with 100% accuracy.
Standard:CCSS.Math.Content.6.RP.A.3.c Find a percent of a quantity as a rate per 100 (e.g., 30% of a quantity means 30/100 times the quantity); solve problems involving finding the whole, given a part and the percent
Resources: http://water.epa.gov/learn/kids/drinkingwater/water_trivia_facts.cfmhttp://www.epa.gov/WaterSense/pubs/indoor.html
Teacher Information
![Page 3: Calculating Water Around the World Anna Brainerd Let’s explore the world’s water while reviewing percentages, ratios, and fractions!](https://reader036.fdocuments.us/reader036/viewer/2022062804/56649d845503460f94a6a46a/html5/thumbnails/3.jpg)
Basic Water FactsRemember that a fraction can also be represented as a percent or ratio. For example,1/4 is the same as1:4 and 25%.
• About 71% of the Earth’s surface is covered by water.
• Saltwater makes up 97% of the Earth’s water.
• 30% of freshwater is in the ground.
Total WaterSaltwaterFreshwater
97%
3%
http://www.unwater.org/worldwaterday/about-world-water-day/world-water-day-2014-water-and-energy/en/
Click the link to learn more about World Water Day.
![Page 4: Calculating Water Around the World Anna Brainerd Let’s explore the world’s water while reviewing percentages, ratios, and fractions!](https://reader036.fdocuments.us/reader036/viewer/2022062804/56649d845503460f94a6a46a/html5/thumbnails/4.jpg)
What about the water we drink?
25% of bottled water comes from the same place as tap water.
http://www.youtube.com/watch?v=Se12y9hSOM0
Click the link below to watch a video to learn more about bottled water.
![Page 5: Calculating Water Around the World Anna Brainerd Let’s explore the world’s water while reviewing percentages, ratios, and fractions!](https://reader036.fdocuments.us/reader036/viewer/2022062804/56649d845503460f94a6a46a/html5/thumbnails/5.jpg)
Water in Your Life
Americans use about 100 gallons of water per day while Europeans use only 50 gallons per day.
The average water faucet flows at a rate of 2 gallons per minute.
On average, 70% of the water used by Americans is used indoors.
http://www.epa.gov/WaterSense/pubs/indoor.html
Click the link for tips on using water every day.
![Page 6: Calculating Water Around the World Anna Brainerd Let’s explore the world’s water while reviewing percentages, ratios, and fractions!](https://reader036.fdocuments.us/reader036/viewer/2022062804/56649d845503460f94a6a46a/html5/thumbnails/6.jpg)
Question #1
30/100 3/10 3/100
If the water on Earth is 97% saltwater, how much of the water is freshwater? Choose the correct fraction.
![Page 7: Calculating Water Around the World Anna Brainerd Let’s explore the world’s water while reviewing percentages, ratios, and fractions!](https://reader036.fdocuments.us/reader036/viewer/2022062804/56649d845503460f94a6a46a/html5/thumbnails/7.jpg)
Correct! Great job! You understand that 3%
converted to a fraction is 3/100.
![Page 8: Calculating Water Around the World Anna Brainerd Let’s explore the world’s water while reviewing percentages, ratios, and fractions!](https://reader036.fdocuments.us/reader036/viewer/2022062804/56649d845503460f94a6a46a/html5/thumbnails/8.jpg)
Question #2
2:1 100:50 1:50
Recall how much water Americans and Europeans use every day. What is the simplest ratio that correctly represents this relationship of Americans to Europeans?
![Page 9: Calculating Water Around the World Anna Brainerd Let’s explore the world’s water while reviewing percentages, ratios, and fractions!](https://reader036.fdocuments.us/reader036/viewer/2022062804/56649d845503460f94a6a46a/html5/thumbnails/9.jpg)
Correct! You know that the ratio is 100:50, so it
can be simplified to 2:1.
![Page 10: Calculating Water Around the World Anna Brainerd Let’s explore the world’s water while reviewing percentages, ratios, and fractions!](https://reader036.fdocuments.us/reader036/viewer/2022062804/56649d845503460f94a6a46a/html5/thumbnails/10.jpg)
Question #3
60:1 120:1 2:1
If a faucet runs at a rate of 2 gallons per minute, how many gallons would be used if the faucet ran for one hour? Choose the correct ratio of gallons to hours.
![Page 11: Calculating Water Around the World Anna Brainerd Let’s explore the world’s water while reviewing percentages, ratios, and fractions!](https://reader036.fdocuments.us/reader036/viewer/2022062804/56649d845503460f94a6a46a/html5/thumbnails/11.jpg)
Correct! You understand that you must multiply
2x60 to get 120 gallons which makes the ratio 120:1.
![Page 12: Calculating Water Around the World Anna Brainerd Let’s explore the world’s water while reviewing percentages, ratios, and fractions!](https://reader036.fdocuments.us/reader036/viewer/2022062804/56649d845503460f94a6a46a/html5/thumbnails/12.jpg)
Conclusion WOW! We have learned so much about
water, and you have shown you are a master of fractions, percentages, and ratios!
![Page 13: Calculating Water Around the World Anna Brainerd Let’s explore the world’s water while reviewing percentages, ratios, and fractions!](https://reader036.fdocuments.us/reader036/viewer/2022062804/56649d845503460f94a6a46a/html5/thumbnails/13.jpg)
Incorrect. Sorry, that is not the correct answer. Reread the question and try again.