Common Core State Standard
3.OA.D.9
Identify arithmetic patterns (including patterns in the addition table or multiplication table), and explain them using properties of operations. For example, observe that 4 times a number is always even, and explain why 4 times a number can be decomposed into two equal addends.

CCSS: 3.OA.D.9
Load up your cannon with the right even or odd ammunition and shoot the numbered barrels to get rid of all of them on each level.  A fun physics game with a mathematical twist.

CCSS: 3.OA.D.9, 4.OA.C.5
Figure out the rule for the given number patterns. Quickly find the missing number in each pattern before time is up!