Use manipulatives to demonstrate addition and subtraction sentences written symbolically. 0206.1.11

Links verified on 12/28/2015

1. Matching Pictures to Number Sentences - Find the correct number sentence to go along with the picture.
2. National Library of Virtual Manipulatives
   1. Algebra [Grades Pre-K-2]
   2. Data Analysis & Probability [Grades Pre-K-2]
   3. Geometry [Grades Pre-K-2]
   4. Measurement [Grades Pre-K-2]
   5. Number & Operations - [Grades Pre-K-2]
3. Visualize the Number line - Using a number line, this activity shows how to use the line to add problems.