#### number & operations

#### probabilities & statistics

#### data analysis

#### measurement

#### geometry

### Number and operations

#### ADDITION & SUBTRACTIOIN

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?

#### NUMBER COMPARISON

problem 18: How is our water used?

problem 21: How long is our Ohio River?

problem 36: Evansville recycling trends

problem 37: Curbside recycling in Vanderburgh

problem 43: Do we use lots of energy?

problem 46: What state produces the most coal?

problem 53: Wind race U.S. vs. China

#### Ordinal numbers

problem 14: How big is our harmful gas? (using bar graphs)

#### ROUNDING

problem21: How long is our Ohio River?

problem 46: What state produces the most coal?

#### place value

problem 21: How long is our Ohio River?

problem 46: What state produces the most coal?

#### expanded notation

problem 36: Evansville recycling trends

problem 37: Curbside recycling in Vanderburgh

problem 44: 10 states with largest energy users

#### &= SYMBOLS

problem 3: How many unhealthy days in our area?

problem 21: How long is our Ohio River?

#### PERCENTAGEs, FRACTIONs & DECIMALs

problem 16: How much of Earth’s water can we use? (percentages)

#### MULTIPLICATION & DIVISION

problem 7: Who has the cleanest car? (half & double)

problem 22: Apple vs. hamburger – which takes more water to produce? (page 164)

problem 23: How much water do I use? (1 digit x 1 digit)

problem 23: How much water do I use? (2 digits x 1 digit)

problem 32: How much trash ends up in landfill?

### probabilities and statistics

#### range, mean, mode & median

problem 43: Do we use lots of energy?

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

### data analysis

#### line graphs

problem 15: Do we make more harmful gas or less?

#### BAR GRAPHs

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 43: Do we use lots of energy?

3-digit numbers

problem 14A: How big is our harmful gas?

problem 14B: How big is our harmful gas?

problem 44: 10 states with the highest energy users

4-Digit Numbers

problem 21: How long is our Ohio River?

problem 51: Solar power at Vanderburgh Public Library

#### Circle graphs

problem 13: Who makes harmful gas?

problem 17: Which continent has the most water?

problem 30: What makes our trash?

problem 42: Our nation’s energy sources (number comparison)

problem 42: Our nation’s energy sources (converting percents to fractions)

problem 47: Energy sources in our state (number comparison)

problem 49: Solar energy in our country

### measurement

#### mass unit

lb. oz. short ton, kg & g

problem 32: How much trash ends up in landfills?

#### length

Inch & Foot

problem 10: How much sea level rises?

### geometry

#### Three dimensional objects

problem 6: What not to burn for healthier air?