First grade
Second grade
Third grade
Fourth grade
fifth grade
First Grade
1-Digit Numbers
problem 23: How much water do I use?
Second Grade
1-Digit Numbers
2-Digit Numbers
problem 7: Who has the cleanest car?
problem 22: Apple vs. Hamburger: Which takes more water to produce?
problem 24: How can I save water?
Third Grade
2-Digit Numbers
problem 7: Who has the cleanest car?
problem 22: Apple vs. Hamburger: Which takes more water to produce?
problem 24: How can I save water?
3-Digit Numbers
problem 14: How big is our harmful gas? (using bar graphs)
problem 18: How is our water used?
problem 22: Apple vs. Hamburger: Which takes more water to produce?
problem 46: What state produces the most coal?
problem 53: Wind race U.S. vs. China
4-Digit Numbers
problem 21: How long is our Ohio River?
FOURTH GRADE
3-Digit Numbers
problem 14: How big is our harmful gas? (using bar graphs)
problem 18: How is our water used?
problem 22: Apple vs. Hamburger: Which takes more water to produce?
problem 26: Global water shortage
problem 53: Wind race U.S. vs. China
4-Digit Numbers
problem 1: Our path to cleaner air
problem 21: How long is our Ohio River?
problem 41: The history of our energy
6-Digit Numbers
problem 46: What state produces the most coal?
Large numbers
problem 20: Water tanks in Evansville
Decimal numbers
problem 5: Is our air getting cleaner?
problem 20: Water tanks in Evansville
problem 48: Our electricity price–high or low?
problem 49: Solar energy in our country
Fifth Grade
3-Digit Numbers
problem 22: Apple vs. Hamburger: Which takes more water to produce?
problem 26: Global water shortage
problem 53: Wind race U.S. vs. China
4-Digit Numbers
problem 1: Our path to cleaner air
problem 41: The history of our energy
6-Digit Numbers
problem 46: What state produces the most coal?
Large Numbers
problem 20: Water tanks in Evansville
Decimal Numbers
problem 5: Is our air getting cleaner?
problem 20: Water tanks in Evansville
thinkenvironmentinmath-swin.com 