I received the Geosafari Motorized Solar System for free in order to give a honest review. All opinions are 100% my own. My daughter is only 3 years old and is already interested in the solar system and so I knew she would adore this educational toy. This was very simple to put together. She loves it and doesn't mind to much but the motor is a little noisy. Tolerable, but noisy. I recommend purchasing the AC adaptor with this. As much as it engages children and they want to play with it for so long, it runs through batteries quickly. It also has a Stardome that coverts the unit into a planetarium which I think is awesome, although my daughter does not really understand it yet. I think its a great feature for when she gets a little older and cares to learn about the stars more. It does have small parts, so you must keep an eye on any younger children but I would recommend this for children under 8 as well, just because it is very educational and fun for younger kids to learn on as well.