Light This Up Game for iPhone
There are plenty of cool iOS games available that can teach your kids a thing or two about science and math. Take Light This Up for instance. It is all about drawing wires and connecting electrical components to light up a bulb. You will need to come up with sums equal to the right power.
The app has a clean design and over 200 levels to keep your kids busy. It starts easy but gets more challenging as you work your way through the levels. You can try this fun game for $1.99 at this time.