These Completing the Square Flash Cards are a fabulous way to help students master a concept and process that is often perplexing to them! In all there are 60 cards, including 20 sets that have students matching an expression, the c-value that completes the square, and the resultant squared binomial. For the x-coefficient there is a mixture of even and odd numbers, so that students can become comfortable with use of fractions as well.These cards work wonderfully with an entire class or a math center. And they are ideal for English language learners, since students get the opportunity to speak the language of mathematics with a partner. This activity supports Common Core, as it promotes deeper understanding (Standard HSA-REI.B4a). - Created by Judy Seki for "Math in a Flash!"