1. Addition & Subtraction Strategies
Task Cards with Self-Checking QR Codes
Created By: Kathy Prine

2. Grade Level(s): 2nd CCSS Standards
MA.2.CCSS.Math.Content.2.NBT.B.5 - [Standard] - Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between ADDITION and subtraction
MA.2.CCSS.Math.Content.2.NBT.B.9 - [Standard] - Explain why ADDITION and subtraction strategies work, using place value and the properties of operations.

3. Teacher Directions:
Students will use these task cards to answer each question using pencil and paper.
After completing all task cards, students will use an iPod Touch or iPad with a QR reader app to check their answers. The QR code will display the correct answer.