"I had put off purchasing this for my older son even though he wanted it because I thought it would just create dust, I was wrong. For any child that grows up building Lego's this is a natural extenton to move them into the future within a farmiliar atmosphere which makes for great success. Not only is he building and creating at home but has school projects based on the same MindStorm set as part of STEM, he even gets help from his college sybling who is in engenering and used the same set in an intro to robotics over the summer at the University. Investing in some batteries is minimal compared to what they are getting out of this. I would highly recommend this to any parent because you're not buying a toy your giving them a great start and if the interest is there MindStorm let's it flourish."
"My son became very frustrated building this set to the point of throwing his hands up and saying I'm done with this Dad it just keeps falling apart. He is 10 and by no means a novice builder, he has built many expert sets and has hundreds of Lego sets but this set tested his patience. After watching him and then looking closely I can see why he was getting so frustrated. In the rear of the trailer is 2 smaller blue plates that when put together make up the base of the rear. As he applied pressure to the assembly the center where the 2 plates meet separated and every piece added wanted to fall off because the base plates aren't correctly seated together. An improvement to this set would be to make a solid rear plate instead of 2 separate pieces. Once I understood what was happening and got him over this hump he was okay with the rest of the build, so help your builders out on this spot to avoid a melt down."