Common Core Standard: Third Grade Math Strategies - The first resource is from Edutopia, a great resource for every educator and well worth a look. In this article the author looks at one of the 3rd Grade CCSS for math and shares how an inquiry based, student-centered exploration of patterns and relationships between addition, multiplication and division can not only foster critical thinking and a deeper understanding but also collaboration skills.
Ready to use fact family iPad station - This post by Mrs. Wideen outlines precisely how she sets up and structures a math iPad station that promotes student application of fact family strategies. It's a great example of how to utilize a limited number of iPads, monitor student work, and develop a bank of student created "think alouds". One tool I might suggest in lieu of the Draw n' Tell app which is $2.99 would be the free Educreations app and to use a generic classroom account for collecting student work.
Maths Frame - 170+ Free Math Games - Richard Byrne who blogs over at Free Technology for Teachers shared a good resource for Smart Board and Interactive Whiteboards or for the computer lab. There you can find tons of interactive math practice games geared to the K-5 classroom.
http://www.mathplayground.com/ - Math playground is another smorgasbord of math practice games but has a couple very nice iPad apps the mirror their web based tools. In particular, I recommend taking a look at the Thinking Blocks activities for modeling word problem strategies using addition, subtraction, multiplication, and subtraction.