| | Sorting and Organizing Buttons and Using Representations to Display Data |  |  |
| | Comparing Height and Graphing Change Over Time |  |    |
| | Doubling and Halving Numbers |  |   |
| Comparing Weights Using a Pan Balance |  |  |
| | Using Subtraction to Create and Explore Bar Graphs |  |   |
| | Exploring Logical And Numerical Relationships |  |   |
| Weighing Variables to Determine Their Values |  |   |
| | Sorting and Classifying Buttons |  |  |
| | Representing Patterns with Shapes and Numbers |  |  |
| | Discovering Combinations |  |  |
| Using a Bar Graph to Subtract
|  |    |
| Exploring Five Subtraction Models — Counting, Sets, Number Line, Balanced Equations, and Inverse of Addition |  |  |
| | Creating Three-Digit Number Combinations |  |   |
| | Investigating Relationships in Growing and Repeating Patterns |  |  |
| Exploring Four Addition Models — Counting, Number Line, Sets, and Balanced Equations |  |  |
| | Observing Relationships between Mass, Length, and Position of a Fulcrum |  |   |
| | Analyzing Graphical Information from Sports |  |  |
| | Using Algebraic Thinking to Discover Properties of Addition |  |   |
| | Finding One More than a Number |  |  |
| Using Geometry and Measurement Concepts to Create Paths |  |   |
| | Investigating Data about Recyclable Materials and Planning to Help the Environment |  |   |
| | Connecting Science and Math by Exploring Your Own Heart |  |   |
| Exploring Five Representations of Subtraction |  |  |
| | Measuring Distance with Standard and Nonstandard Units |  |   |
| Comparing Weights of Objects |  |  |
| | Using Graphs to Analyze Information and Make Predictions |  |  |
| | Recognizing, Constructing, and Identifying Triangles |  |  |
| | Exploring the Concepts of Greater Than, Less Than, and Equal To |  |   |
| | Learning the Names of Solid Geometric Shapes and Exploring Their Properties |  |  |
| | Using Nonstandard Units to Measure Length |  |  |
| Making Groups of 10 to 20 Objects, Connecting Number Names to the Groups |  |  |
| Connecting Number Words to Groups of Objects |  |  |
| | Playing Games and Using Number Properties to Learn Addition Facts |  |  |
| Exploring Subtraction Properties with Five Models of Subtraction |  |  |
| Collecting Data and Displaying It With Tally Marks, Pictographs, Bar Graphs, and Glyphs |  |  |
| Exploring "Take Away" Subtraction in Several Different Contexts |  |  |
| | Using Objects, Pictures, & Symbols to Measure Length, Area, Volume, Time, & Weight |  |  |
| | Creating a Map of a Pet |  |   |
| | Exploring the Relationship Between Pennies, Nickels, Dimes, Quarters, and Examining Combinations |  |   |
| Getting to Know Your Classmates |  |  |
| Exploring Patterns from Physical Education, Science, and Social Studies |  |  |
| Counting, Saving, Adding and Purchasing with Coins |  |   |
| | Using Tangram Puzzles to Explore Spatial Relationships |  |   |
| Counting Ducks and Recording Data |  |   |
| | Using a Mirror to Visually Develop a Student’s Understanding of Doubles |  |   |
| Representing 8 Using a Variety of Manipulatives |  |  |
| | Interpreting the Physical World by Identifying and Sorting Squares and Rectangles |  |   |
| | Finding Sums of 5, 6, 7, and 8 |  |  |
| | Introducing Young Children to Subtraction |  |  |
| Capitalize on the Excitement of Baseball Season to Make Math Connections |  |   |
| | Developing Geometric Understanding and Spatial Visualization Skills |  |  |
| | Finding and Using Numbers at the Toy-Shop |  |  |
| | Exploring the Concepts of Longer Than, Shorter Than, and the Same Size Using a Piece of Yarn |  |  |
| | Measuring Heights and Arm Spans |  |   |