### Number and operations

3-Digit Numbers

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

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 49: Solar energy in our country

#### Number Comparison

problem 21: How long is our Ohio River?

problem 46: What state produces the most coal?

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

Decimal numbers

problem 48: Our electricity price–high or low?

#### Ordinal numbers

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

#### ROUNDING

problem 5: Is our air getting cleaner?

problem21: How long is our Ohio River?

problem 37: Curbside recycling in Vanderburgh

problem 46: What state produces the most coal?

Decimal numbers

problem 49: Solar energy in our country

#### PLACE VALUE

problem 21: How long is our Ohio River?

problem 37: Curbside recycling in Vanderburgh

problem 46: What state produces the most coal?

#### &= SYMBOLS

problem 21: How long is our Ohio River?

problem 48: Our electricity price–high or low?

#### PERCENTAGEs, FRACTIONs & DECIMALs

problem 13:Who makes harmful gas? (converting percentages to fractions & decimals)

problem 16: How much of Earth’s water can we use? (converting percentages to fractions & decimals)

problem 17: Which continent has the most water? (converting percentages to fractions & decimals)

problem 38: How much bottles is recycled? (converting percentages to fractions & decimals)

problem 47: Energy sources in our state

#### MULTIPLICATION & DIVISION

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

problem 7: Who has the cleanest car?

problem 22: Apple vs. hamburger – which takes more water to produce?

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

problem 29: How much trash do we have?

problem 32: How much trash ends up in landfill?

problem 50: Solar power on Swonder

Multiples of 10

problem 20: Water tanks in Evansville

problem 32: How much trash ends up in landfill?

problem 55: How much energy & money do new light bulbs save?

Decimal numbers

problem 20: Water tanks in Evansville

### probabilities and statistics

#### MEAN, Median, MODE &  range

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

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

### data analysis

#### LINE GRAPHs

2-Digit Numbers

problem 11: The hottest & coldest days

Numbers up to 250

problem 27 : How much trash does our country produce?

3-Digit Numbers

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

problem 27 : How much trash does our country produce?

4-Digit Numbers

problem 52: Our wind power

Decimal Numbers

problem5: Is our air getting cleaner?

#### BAR GRAPHs

problem 4: Got healthier air in Evansville?

problem 7: Who has the cleanest car?

problem 11: The hottest & coldest days

problem 12: What makes harmful gas?

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 19: Do you think we use lots of water?

problem 21: How long is our Ohio River?

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

problem 38: How much bottles is recycled?

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

problem 51: Solar power at Vanderburgh Public Library

Double bar graphs

problem 24: How can I save water?

#### Circle graphs

problem 13: Who makes harmful gas?

problem 17: Which continent has the most water?

problem 18: How is our water used?

problem 30: What makes our trash?

problem 31: How do we treat our trash in Indiana?

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

problem 42: Our nation’s energy sources (applying percents)

problem 47: Energy sources in our state (converting percentages to fractions and decimals)

problem 49: Solar energy in our country

### measurement

#### MASS UNIT

lb. & oz.

problem 29: How much trash do we have?

#### LENGTH

Inch & Foot

problem 10: How much sea level rises?

### geometry

#### THREE DIMENSIONAL OBJECTS

problem 6: What not to burn for healthier air?

problem 25: What will you find the Ohio River?

problem 37-2: What we can recycle in Evansville