#### Second grade

#### Third grade

#### Fourth grade

#### fifth grade

### Second Grade

### NUMBER & OPERATIONS

#### percentages, fractions & decimals

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

#### <,>&= SYMBOLS

problem 43: Do we use lots of energy?

### data analysis

#### Circle graphs

problem 17: Which continent has the most water?

problem 43: Do we use lots of energy?

### Third Grade

### Number & operations

#### ADDITION & SUBTRACTIOIN

3-Digit Numbers

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

#### NUMBER COMPARISON

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

#### PERCENTAGEs, FRACTIONs & DECIMALs

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

### PROBABILITY AND STATISTICS

### data analysis

#### Circle graphs

problem 17: Which continent has the most water?

problem 49: Solar energy in our country

### measurement

#### length

Inch & Foot

### FOURTH GRADE

### number & operations

#### ADDITION & SUBTRACTIOIN

3-Digit Numbers

problem 26: Global water shortage

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

#### Number Comparison

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

#### PERCENTAGEs, FRACTIONs & DECIMALs

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

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

### PROBABILITY AND STATISTICS

#### MEAN, Median, MODE & range

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

### data analysis

#### BAR GRAPHs

4-Digit Numbers

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

#### Circle graphs

problem 17: Which continent has the most water?

problem 49: Solar energy in our country

### measurement

#### LENGTH

Inch & Foot

problem 10: How much sea level rises?

### Fifth Grade

### number & operations

#### ADDITION & SUBTRACTIOIN

3-Digit Numbers

problem 26: Global water shortage

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

#### Number Comparison

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

#### PERCENTAGEs, FRACTIONs & DECIMALs

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

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

### PROBABILITY AND STATISTICS

#### MEAN, Median, MODE & range

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

### data analysis

#### Circle GRAPHs

problem 17: Which continent has the most water?

problem 49: Solar energy in our country

#### BAR GRAPHs

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