3 Snakes app for iPhone and iPad

Description
3 Snakes is a great way to prepare your child for measuring length.
Length concepts such as longer/longest and shorter/shortest are developed as you turn the pages of this flipper-book app.
Each challenge comes in the form of an instruction like “Make a long red snake and two short green and blue snakes.”
Sounds easy? Try it yourself and see how you go.
Features:
•Introduces the language of measurement
•Encourages visual comparisons of the length of two or three objects
•Develops reasoning skills as your child learns to eliminate or accept whether the current picture meets the criteria set