I'm not exactly sure if you questioning a lack of dedication or a lack of fun on your team, but here's my spiel:
First off, if you're working together at all, you must have a good basis for a team. If you mean you don't feel "connected" like a team while building the robot, try creating an atmostphere that will promote this. Robotics for us in a sense disintegrates the barriers of grade levels, and everyone, regardless of their grade, can work together without feeling inferior/superior to anyone.Try to make everyone on the team work together, and don't discriminate based on grade level or number of years on the team. In your spare time, or while your working, strike up conversation with your teamates who you don't know as well, so they'll feel comfortable. Also, play music and havefood their if you're allowed in your workshop; it kind of lightens the mood a bit.
Hope this helps
