I home school my 10 year old daughter and I hate the "drill and kill" methods of teaching, so I am always looking for ways that make learning fun.  Much of what I come up with or have purchased, my daughter finds boring.  Not so with this math game!  She actually expected to find this game dull, but she is hooked.  She literally came to understand decimals much better just by playing with this "toy" for less than half an hour, and she enjoys trying to beat her previous timing.  It comes with a booklet that shows HOW to perform the various math operations if the child does not yet know how, then the game is used for practicing.  Once they are comfortable with a level, they can advance to the next hardest level.  This is the first math learning anything I've found that she finds entertaining, and it really does improve her math skills, so I'm happy, too!  It teaches several skills including adding, subtracting, multiplying, dividing, fractions, percents, decimals, and it can be used as a calculator, too.  My daugher said to give it 5 stars.