# Interactive Integers

#### Interactive Integers – Addition and Subtraction

Perfect for learning how to add and subtract positive and negative numbers!

This app provides two fun interactive methods for learning and understanding addition and subtraction of positive and negative numbers. The color tile model and number line model are two of the most common classroom methods for teaching integers. These methods help students visually understand integer concepts instead of relying only on memorization of rules. ##### ★ Color Tiles:
• Allows students to drag yellow positive tiles and red negative tiles around the screen to solve addition problems.
• Problems are guided with step-by-step directions
• Information screen provides detailed explanations and examples When a postive and a negative tile are dragged on top of each other they will disappear because one negative and one positive makes zero!

##### ★ Number Line:
• The touch functionality of the device allows students to bring the number line model to life.
• Problems are guided with step-by-step directions
• Information screen provides detailed explanations and examples ##### ★ Practice:
• Allows students to practice adding and subtracting integersProblems are guided with step-by-step directions
• Flexible options – choose number of problems, problem difficulty and choose add/subtract/both   “The directions and explanations are very clear. I even let my second grader play around with this app, and he was understanding how to use the color tiles and the number line to answer integer problems!”

“This app is well thought out and easy to understand.”

“Great Visual Teaching Tool”

“I am a math teacher and I want to use this app in my classroom when I teach a unit on integers.” Detailed examples for each type of problem!

• Add two positive numbers with color tiles
• Add two negative numbers with color tiles
• Add one positive and one negative number with color tiles
• Adding a positive number with the number line
• Adding a negative number with the number line
• Subtracting a positive number with the number line
• Subtracting a negative number with the number line

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