- 420 Views
- Uploaded on
- Presentation posted in: Sports / GamesEducation / CareerFashion / BeautyGraphics / DesignNews / Politics

Essential Questions

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

- Go to the heart of a discipline
- Recur naturally throughout one’s learning and in the history of a field
- Raise other important questions

- Must a story have a moral, heroes, and villains?
- How does an organism’s structure enable it to survive in its environment?
- Who is a friend?
- Do we always mean what we say and say what we mean?

- What makes a video game “good”?
- Where do Waves Come From?
- When is Fighting Good and When Is it Bad?
- What is a Home?
- Who Owns the Internet?

- Provide subject- and topic- specific doorways to essential questions
- Have no obvious “right” answer
- Are deliberately framed to provoke and sustain student interest

- Is Huck Finn a hero?
- Has history proven that the enemy of my enemy is my friend?
- How do cats see in the dark?
- Does technology always lead to progress?
- Is the gap between rich and poor better now than 100 years ago?

Are vacations worth the cost?

- What is the greatest expense of traveling abroad?
- Which country would be the most interesting to visit?
- What is the best travel method for seeing a country?
- How would you estimate the cost of traveling in Germany?

Are Germany’s gas prices affordable?

Joe’s Trip to Germany

By

Richard Holden

- Joe is planning a trip to Germany
- He will rent a car to drive while there
- He knows the places he plans to go
- He wants to know how much he will spend on gas while there (in U.S. dollars)

- Know the total distance to drive
- Know the price of gasoline in Germany
- Know how many miles/gallon he gets
- Know the conversions:
- For kilometers to miles
- For gallons to liters
- For Deutsch Marks to dollars

Joe studies a map of Germany and finds he will drive a total of 6500 kilometers.

- Joe finds out from an Internet search that the price of gasoline in Germany is 1.6 DM per liter (they are still accepting Deutsche Marks in Germany)

Joe’s car gets 32 miles per gallon

- 1 Km = 0.62 miles
- 1 gal = 3.785 liters
- 1.99 DM = $1.00

Distance is 6500 Km

Gas price is 1.6 DM/liter

Car gets 22 mpg

1 Km = 0.62 miles

1 gal = 3.785 liters

1.99 DM = $1.00

- Use ratios equal to one (identity property of multiplication)
- Set up each ratio so units will cross cancel
- Begin with the distance (6500 km)
- Continue until the distance is changed to dollars

Distance is 6500 Km

Gas price is 1.6 DM/liter

Car gets 22 mpg

1 Km = 0.62 miles

1 gal = 3.785 liters

1.99 DM = $1.00

The Solution

6500 Km

Next: Find an equation with Km in it

Distance is 6500 Km

Gas price is 1.6 DM/liter

Car gets 22 mpg

1 Km = 0.62 miles

1 gal = 3.785 liters

1.99 DM = $1.00

The Solution

6500 Km X 0.62 mi

1 Km

Next: Find an equation with miles in it

Distance is 6500 Km

Gas price is 1.6 DM/liter

Car gets 22 mpg

1 Km = 0.62 miles

1 gal = 3.785 liters

1.99 DM = $1.00

The Solution

6500 Km X 0.62 mi X 1 gal

1 Km 22 mi

Next: Find an equation with gallons in it

Distance is 6500 Km

Gas price is 1.6 DM/liter

Car gets 22 mpg

1 Km = 0.62 miles

1 gal = 3.785 liters

1.99 DM = $1.00

The Solution

6500 Km X 0.62 mi X 1 gal X 3.785 liters

1 Km 22 mi 1 gal

Next: Find an equation with liters in it

Distance is 6500 Km

Gas price is 1.6 DM/liter

Car gets 22 mpg

1 Km = 0.62 miles

1 gal = 3.785 liters

1.99 DM = $1.00

The Solution

6500 Km X 0.62 mi X 1 gal X 3.785 liters X 1.6 DM

1 Km 22 mi 1 gal 1 liter

Next: Find an equation with DM in it

Distance is 6500 Km

Gas price is 1.6 DM/liter

Car gets 22 mpg

1 Km = 0.62 miles

1 gal = 3.785 liters

1.99 DM = $1.00

The Solution

6500 Km X 0.62 mi X 1 gal X 3.785 liters X 1.6 DM X $1.00

1 Km 22 mi 1 gal 1 liter 1.99DM

Finally, multiply by the numerators and then divide by the denominators.

Distance is 6500 Km

Gas price is 1.6 DM/liter

Car gets 22 mpg

1 Km = 0.62 miles

1 gal = 3.785 liters

1.99 DM = $1.00

The Solution will be in Dollars

6500 Km X 0.62 mi X 1 gal X 3.785 liters X 1.6 DM X $1.00

1 Km 22 mi 1 gal 1 liter 1.99DM

$557.46