A maglev train is a train that levitates with magnets 10 millimeters high. It uses magnets with to different poles and repels.
We used  12 disk magnets on either side. For the train we did 5 magnets on 4 sides then one in the middle.  

To make it levitate we put tow strip magnets and it worked! they were on either side of the track and disk magnets for the train.  

Before that we put disk magnets and it didn’t work because we didn’t have south to south or north to north. So they retracted instead of repelling so it stuck to the track.

Working together was fun I figured if one takes control you don’t do well and it was challenging but we eventually got it we were so fun.