Cost: $0.99 (will sometimes be free)
CrossFingers is a great logic game for all ages. There are levels ranging from Baby (really easy) to Pro. This game would be useful in a math classroom especially when the students are learning about Geometric shapes. If the classroom is equipped with iPads, the students can work as a group to solve some of the puzzles or individually. There are some easy puzzles but at the same time they can be pretty challenging. Essentially it is another fun way to do a virtual tangram. This game is very addicting and really helps your mind to think logically.
Pros: I think this game has a lot to offer for all students because there are multiple levels and difficulties which is also good when there are different levels of learning in the classroom. Also, the students will learn to think logically while playing this fun game.
Cons: The problem is that this app is not always free so it would be important to be on the lookout for when it is free. Also, a problem I have noticed when playing is when using multiple fingers especially during the harder levels the screen will move which pauses the game. This could be frustrating towards some.
I have tried the app Tangram XL Free and it essentially works the same as CrossFingers but it does not have as many levels or difficulties. There are a limited number of templates to use and shapes that fit the templates. If you wish to have more templates, then you would need to buy them. I would recommend CrossFingers over Tangram XL because of the variety and challenge it brings to the student.