Pixie is one of my all time favorite apps for the classroom. You can make almost anything for any subject. We used a Double Decker Bus to make 10 in different ways. The students posted their finished slideshow to their student blogs.
You can check them out HERE.
This is a hiding game I made in Pixie. The students can hide some of the fish behind the boat and their partner has to tell them how many are hidden. They can then move the boat to reveal the hidden fish to see if they were right.
Pixie has a variety of virtual manipulatives within the app. I used the base ten blocks to create a -balance the scale. The students drag a copy to make the scale balance.
Click HERE for instructions on creating a lesson in Pixie.