Physics Mechanics Science Toys - Newton's Cradle, Kinetic Art Asteroid, Perpetual Motion, Balance Balls Desk Toy Home Decoration, Home Office Desk Decoration (Asteroid)

My 9 year old loves it. It is a bit fragile but does work great on a flat surface. Great for her desk.

It is cheap, well you saw the price! However, for the price you pay it is a good deal. I had multiple middle school students using it and a few toddlers who got it in a fair knot. I untangled it and it continues to work just fine. Easy and compact.

Very light weight and an amazing addition to my son's room which he has ADHD. it doesn't stop rocking as long as the battery is good. It's very relaxing for him when he watches it. I would recommend to anyone, especially for ADHD.

It broke in my hand before we ever got it to work! I bought this as a gift for my child's birthday. Super disappointing. It's cheap plastic (not metal). Even if we had got it to work, it does not really demonstrate "perpetual motion" of anything, because it requires batteries to do...whatever it was supposed to do? It doesn't seem to be able to rotate (w/o breaking). One small piece is magnetic and I am guessing the base has a small magnet? We never had a chance to try it out! This is a decorative item only. I gave it another star because it was shipped quickly and the pictures are accurate. It is pretty. Just be sure to read the detailed description carefully and don't expect to actually be able to play with it.

I had purchased this as a gift for my 9 year old son. He specially requested a Newton's Cradle for Christmas. I didn't want to spend too much money on it, but you definitely get what you pay for. If you want something nice, don't waste your time buying this one. It is made of plastic and the strings can get tangled easily. I had to return it and was disappointed that I couldn't find a better one in our price range.

Its junk started to rust

I needed 6 Newton's Cradles for an elementary energy transfer activity. So, I was looking for something that would be inexpensive, but work well. This definitely met my expectations. The packaging prevented tangling and I was able to reuse it to repack them for storage.

This is an intriguing little toy to watch. With four AA batteries (not included), and the swing direction aligned to north/south, it seems it can go forever.