### 1: The Expanded Form of Addition

Target Sum Card Game (Multi-digit Addition)

### 3: The Expanded Form of Subtraction

Cargo Captain (Multi-digit Subtraction)

Graphing Skills

### 4: More on the Expanded Form of Subtraction

Mascot Election (Pictographs and Bar Graphs)

### 8: The Expanded Form of Multiplication

Elevator Operator (Line Graphs)

### 16: Fractions on a Number Line

Comparing and Ordering Fractions

Movie Reviewer (Mean and Median)

### 17: Fractional Parts Between 0 and 1

Fraction Garden (Comparing Fractions)

Modeling Fractions (Area Models)

### 18: Visualizing Fractional Parts with Different Shapes

Fraction Artist 1 (Area Models of Fractions)

Fraction Artist 2 (Area Models of Fractions)

### 19: Numerator and Denominator

Reaction Time 1 (Graphs and Statistics)

### 20: Understanding Fractional Parts

Movie Reviewer (Mean and Median)

### 21: Fractions Equal to, Less Than, and Greater Than 1

Fractions Greater than One (Fraction Tiles)

Movie Reviewer (Mean and Median)

### 22: Estimating Fractions

Estimating Sums and Differences

### 23: Surveying Students - Fractions and Statistics

Stem-and-Leaf Plots

### 27: Equivalent Fractions

Equivalent Fractions (Fraction Tiles)

### 31: Same Denominator

Adding Fractions (Fraction Tiles)

### 37: Measuring Objects with a Ruler

Measuring Trees

### 41: What is Multiplication

Critter Count (Modeling Multiplication)

### 42: Multiplying a Fraction by a Fraction

Multiplying Fractions

### 43: Thinking About Multiplying Fractions Another Way

Chocomatic (Multiplication, Arrays, and Area)

### 49: Dividing Fractions by Fractions

Dividing Fractions

### 53: Improper Fractions and Mixed Numbers

Fractions Greater than One (Fraction Tiles)

Rock Art (Transformations)

### 60: Changing Mixed Numbers Into Improper Fractions

Improper Fractions and Mixed Numbers

### 61: Multiplying Mixed Numbers

Multiplying Mixed Numbers

### 62: Reflections

Quilting Bee (Symmetry)

Reflections

### 63: Dividing Mixed Numbers

Dividing Mixed Numbers

### 66: What are Decimals?

Modeling Decimals (Area and Grid Models)

Modeling Decimals (Base-10 Blocks)

Treasure Hunter (Decimals on the Number Line)

### 68: Writing Fractions as Decimals

Fraction, Decimal, Percent (Area and Grid Models)

### 69: Writing Decimals as Fractions

Fraction, Decimal, Percent (Area and Grid Models)

### 70: More Practice with Decimals

Isosceles and Equilateral Triangles

### 76: Ordering Decimals

Comparing and Ordering Decimals

### 80: Adding and Subtracting Decimals

Adding Decimals (Base-10 Blocks)

Subtracting Decimals (Base-10 Blocks)

### 81: Adding Zeros to Decimal Numbers

Area of Parallelograms - Activity A

### 82: Making Sense of Decimal Numbers

Area of Parallelograms - Activity B

### 83: Multiplication With Decimal Numbers

Multiplying with Decimals

### 85: Multiplying Decimals and Number Sense

Polygon Angle Sum - Activity B

### 86: Dividing Decimal Numbers

Circle: Circumference and Area

Measuring Trees

### 88: Dividing Decimals and Number Sense

Circle: Circumference and Area

### 90: What are Percents

Graphing Skills

Percents and Proportions

### 91: Percents and Fractions

Fraction, Decimal, Percent (Area and Grid Models)

Ordering Percents, Fractions and Decimals

### 96: Percent Increases

Percent of Change