#### First grade

#### Second grade

#### Third grade

#### Fourth grade

#### fifth grade

### First Grade

1-Digit Numbers

problem 45: How many coal mines does our community have?

### Second Grade

1-Digit Numbers

problem 4: Got healthier air in Evansville?

problem 12: What makes harmful gas?

problem 45: How many coal mines does our community have?

2-Digit Numbers

problem 3: How many unhealthy days in our area?(creating bar graphs)

problem 4: Got healthier air in Evansville?

problem 7: Who has the cleanest car?

### Third Grade

1-Digit Numbers

problem 4: Got healthier air in Evansville?

problem 12: What makes harmful gas?

problem 45: How many coal mines does our community have?

2-Digit Numbers

problem 3: How many unhealthy days in our area?(creating bar graphs)

problem 3: How many unhealthy days in our area? (interpreting bar graphs)

problem 4: Got healthier air in Evansville?

problem 7: Who has the cleanest car?

3-digit numbers

problem 14: How big is our harmful gas? (using ordinal numbers)

problem 14: How big is our harmful gas? (using addition & subtraction)

4-Digit Numbers

problem 21: How long is our Ohio River?

problem 51: Solar power at Vanderburgh Public Library

### FOURTH GRADE

1-Digit Numbers

problem 4: Got healthier air in Evansville?

problem 12: What makes harmful gas?

problem 45: How many coal mines does our community have?

2-Digit Numbers

problem 3: How many unhealthy days in our area?(creating bar graphs)

problem 3: How many unhealthy days in our area? (interpreting bar graphs)

problem 4: Got healthier air in Evansville?

problem 7: Who has the cleanest car?

problem 11: The hottest & coldest days

problem 35: why is it better to recycle aluminum cans?

problem 38: How much bottles is recycled?

3-digit numbers

problem 14: How big is our harmful gas? (using ordinal numbers)

problem 14: How big is our harmful gas? (using addition & subtraction)

problem 18: How is our water used?

problem 46: What state produces the most coal?

4-Digit Numbers

problem 19: Do you think we use lots of water?

problem 21: How long is our Ohio River?

problem 51: Solar power at Vanderburgh Public Library

Double bar graphs

problem 24: How can I save water?

### Fifth Grade

2-Digit Numbers

problem 3: How many unhealthy days in our area?(creating bar graphs)

problem 3: How many unhealthy days in our area? (interpreting bar graphs)

problem 7: Who has the cleanest car?

problem 11: The hottest & coldest days

problem 35: why is it better to recycle aluminum cans?

problem 38: How much bottles is recycled?

3-digit numbers

problem 18: How is our water used?

problem 46: What state produces the most coal?

4-Digit Numbers

problem 19: Do you think we use lots of water?

problem 51: Solar power at Vanderburgh Public Library

Double bar graphs

problem 24: How can I save water?