Smartivity Roller Coaster Marble Run STEM DIY Kit for Kids 8-14 Years | Best Birthday Gifts for Boys & Girls 8-10-12-14 Years Old | Educational Construction Activity Game

I would consider myself as a strict grader of products. I am not easily impressed and usually expect a lot from anybody selling me anything - especially for my 6-year old. So please realize that when I say I absolutely LOVED this product, they must have done a lot of things well. Quality: The finish of the laser-cut parts is amazing. Everything in this complex mechanism fit perfectly. Design: Someone at Smartivity's really thought through this design and assembly. It's a thing of beauty and works flawlessly in the end. All fastening is with non-messy rubber bands. The directions are easy, and even my 6-year old followed the instructions effortlessly. Engaging: My hyperactive daughter stayed put for the entire time and was in a total state of flow in putting this assembly together. We collaborated on building it as a father-daughter team, and I have to say that I was totally into it too. The best use of the time and money we've invested in a build it yourself toy in a long LONG time!

Good Quality. Quite engaging. Only if the track size of roller was a bit bigger.

Amazing ideation by smartivity, I am so amazed to see this creativity with the product. While opening the package it looks like a daunting task however their instructions are very sequential and clear, allowing no confusion no misses. Very high quality product with very precise cuts for separating each part. Hats-off to the thoughtfulness here by the product makers. I ordered this with only one thought that, this will take my 3year old toddler away from you-tube and at least the start was good. thanks for this interesting and intelligent product. Only one note: i am going to use it as an engager for my toddler 3years old, I doubt whether it would be an interesting item for the age mentioned in this product (8+yrs) - as kids of this age might not really feel this product amazing after few days

I'm really glad that i chose this as the b'day gift for my 8 Yr old cousin. The kit comes in a sizeable box and the initial impression was slightly overwhelming with 4 cardboard sheets with cutouts required for constriction and a construction guide booklet of 20+ pages. I was worried whether it might be a bit too much for an 8 year old. But once you start to guide them step by step and remain patient, it's a rewarding experience for both the kid and yourself to see the Rollercoaster come alive in stages. And once it's setup, the game which in simple terms is snooker with marbles, surprisingly has good repeat value. Honestly even as an adult, it's exciting to see the marbles roll their way along the path, so you can imagine the awe on the kid's face. WARNING - you will have to bear with the constant nagging from the kid to join them in playing the game again and again and again. The cardboard pieces are sturdy and the physics involved is seriously impressive and makes you appreciate the creativity and hardwork behind making this product. So kudos to the smartivity team.

price is high as its aone time mfg cost and that also soft hardboard might be cost 100 rs

It was good to assemble and play with the toy. But it got caught a fungus within a week due to moisture in air. This was unhealthy for kids to play with. We tried wiping it up; but it did not clear the fungus. We could not wash it either, as it is made up of cardboard. I had no other option but to throw the toy in dustbin. It was very painful to throw such a wonderful toy. It would have been better if they had used a fiber or thick plastic instead of cardboard sheets.

The process of assembling the product is very engaging and stimulates the thinking process as it sharpens the creativity. But after that, it isn't durable. The parts start falling apart at the slightest provocation, which is inevitable for 8 year old. It's not durable.

The product is really a very good product. The instructions are very clear and the diagrams completely unambiguous. Another great thing about this is that the parts fit very cleanly. It is amazing to make and you are curious as to what is the end product till the very end ... Which makes the assembly interesting. My 9 year old son made it without any help. Once assembled the toy is great fun to use . Given it is relatively cheap it is a great value for money