![Union, Intersection and the Empty Set](http://mathfour.com/wp-content/uploads/2011/07/MathFourSets001.png)
Check out this way to see how union and intersection work – using SnackTraps and blocks. Also, how the empty set works with them! Continue Reading →
Check out this way to see how union and intersection work – using SnackTraps and blocks. Also, how the empty set works with them! Continue Reading →