There are a lot of math curriculum programs out there. Some good, some not so good, but the thing they are all missing to a great extent is helping students develop number sense. It is a really easy thing, but often gets overlooked among all the standards and procedures and tests. So, to help you and your students supplement this all important area, here are 6 number sense games with several degrees of difficulty that can be played in your classroom on a daily basis. Each takes between 10 and 20