Title: Pattern Shapes, by the Math Learning Center
Summary: Virtual pattern blocks with some extra useful teaching tools
Pros: A protractor, grids, and built-in patterns add extra learning potential to an otherwise excellent digital version of the classic manipulatives.
Cons: The app is very picky about rotating shapes before they snap together, and patterns can't go beyond the bounds of the screen.
Bottom Line: If you don't already have a bucket of pattern blocks, or want a more portable option, this free version may be a great fit for your classroom.
Read more here.