CONCEPT TOOL GUIDE

Modeling Addition by Adding to

Modeling Subtraction by Taking from

Subtracting by Counting How Many More

Indirect Measurement

Using Models to Add 1, 2, and 3-Digit Numbers

Unit Fractions of a Whole

Comparing and Ordering by Length

Making Scaled Bar Graphs

Defining Two-Dimensional Shapes by Their Attributes

Drawing 2-D Shapes from Their Attributes

Defining Three-Dimensional Shapes by Their Attributes