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LEGO Chain Reactions (Klutz Science/STEM Activity Kit), 9" Length x 1.06" Width x 10" Height

4.5 4.5 out of 5 stars 22,756 ratings
$18.19 with 39 percent savings
List Price: $29.99

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FREE Returns
No Import Fees Deposit & $13.61 Shipping to France Details

Shipping & Fee Details

Price $18.19
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Estimated Import Fees Deposit $0.00
Total $31.80

Available at a lower price from other sellers that may not offer free Prime shipping.
Chain Reactions
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About this item

  • Nappa silver award winner
  • Design and build 10 amazing moving machines - teach your bricks new tricks
  • Comes with 80 page instructions, 33 LEGO pieces, Instructions for 10 modules, 6 plastic balls, string, paper ramps and other components
  • Includes a 80 page instructional book with Klutz Certified crystal clear instructions
  • Includes more than 30 essential LEGO elements
  • Recommended for children ages 8+

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Customer reviews

4.5 out of 5 stars
22,756 global ratings

Customers say

Customers find the book a great gift and fun. They also say it's educational and a good starter kit for learning about science and building things. Customers describe the book design as really cool and fostering creativity. They say it’s a nice addition to any Lego collection and inspires kids to use their toys in other ways. However, some customers report issues with the paper parts and Lego pieces. Opinions are mixed on the complexity level, with some finding it easy to follow and others challenging to put together.

AI-generated from the text of customer reviews

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Book designEducational valuePlotGiftabilityLegoComplexity levelLegosPaper parts
275 customers mention "Book design"250 positive25 negative

Customers find the book design really cool, well thought out, and a great book of ideas for using Legos. They say the premise of the book is awesome and provides inspiration for their creations today. Readers also mention that the diagrams are very helpful.

"...Experimentation: Users appreciate that the kit promotes experimentation and creativity, allowing children to design their own chain reactions beyond..." Read more

"...A lot of what you're paying for here is in my opinion is the wow factor of the book and the well thought out concepts...." Read more

"...Reactions kit is a brilliant fusion of engineering principles and creative play, catering to the curious minds of budding engineers and enthusiasts..." Read more

"...So much creativity was shown and I had a blast too!..." Read more

180 customers mention "Educational value"169 positive11 negative

Customers find the book educational, allowing children to be creative and independent. They say it's exciting when it works and a great family project. Customers also say it instills a sense of accomplishment as intricate systems come to life. They also say the book is engaging for mechanically minded children 8-16 and comes with an activity book to show kids how to create the different STEM.

"...Encourages critical thinking and problem-solving as children figure out how to connect different machines to create a continuous chain reaction...." Read more

"...assemble, challenging to make fully, reliably functional and thrilling once they work for that first time. It's all good stuff!" Read more

"...It instills a sense of accomplishment as intricate systems come to life, making it a must-have for anyone eager to delve into the fascinating..." Read more

"...The premise is a good one, and I feel that it teaches some basic engineering ideas (levers, pulleys etc)...." Read more

168 customers mention "Plot"157 positive11 negative

Customers find the plot of the book fun.

"...LEGO Chain Reactions is a highly engaging and educational kit that combines the fun of building with the learning of basic physics principles...." Read more

"...Help your kids think outside the box. It is very rewarding and provides something ready-made kits do not: problem-solving and creativity...." Read more

"...way to inspire curiosity and learning, proving that science can be both fun and educational. Highly recommended!" Read more

"I purchased this for my grandson for Christmas. He’s had a wonderful time playing with it. It reminded me of the old Mouse Trap game when I saw it...." Read more

72 customers mention "Giftability"67 positive5 negative

Customers find the book a great gift.

"...It's a bit small. But good intro for someone who's just dabbling. Good gift." Read more

"Great gift!" Read more

"I bought this for my grandson who loves Legos. This is the perfect gift for the child who has plenty of Legos...." Read more

"The Lego reactions set is an awesome gift to give to a child...." Read more

35 customers mention "Lego"35 positive0 negative

Customers find the book a great addition to any Lego collection. They say it can be used with other Legos, and the instructions for 10 different machines allow for a diverse range of contraptions. Customers also mention that the kit includes 33 LEGO pieces, instructions for different machines, and chain reactions components. They find the combination wonderful and great for traveling.

"...Key FeaturesComprehensive Kit:The kit includes 33 LEGO pieces, instructions for 10 different machines, and essential elements like..." Read more

"...design of the Lego Chain Reactions components allows for a diverse range of contraptions, sparking the imagination of aspiring engineers to create..." Read more

"Really like the set, the extra legos that come with it, and the ideas/instructions for projects are really good. My daughter loves these things...." Read more

"...He's a lego-aholic and this was a nice addition to his collection. He loves making "inventions" with this set...." Read more

164 customers mention "Complexity level"92 positive72 negative

Customers are mixed about the complexity level of the book. Some mention the ideas and instructions for projects are really good, making it easy to grasp and build the Legos. They also say the diagrams are very helpful and there is a very good basic introduction to Rube Goldberg machines. However, others say it's challenging to put together and they did encounter difficulty with the final activity.

"...Illustrated Instructions:The included book provides clear, step-by-step instructions with colorful illustrations, making it easy for..." Read more

"You need many more pieces to assemble, the ones included in the kit are not enough and can be frustrating." Read more

"...chain reactions are fun for children to assemble, challenging to make fully, reliably functional and thrilling once they work for that first time...." Read more

"...It does require my help to build the machines; but that's totally okay with me because it helps me learn right along with him...." Read more

176 customers mention "Legos"21 positive155 negative

Customers find the legos in the book to be small and hokey. They also say the book does not include all the pieces needed to assemble the projects in thebook. Customers also mention that the side box containing the le gos is feeble and not enough to do very much.

"...ConsLimited Pieces: The set includes a limited number of LEGO pieces, so additional LEGO sets might be needed for more complex projects...." Read more

"...walked away I think because it looks complicated and the projects contain very few pieces...." Read more

"...Instead of being frustrated that this kit does not come with every part, embrace the challenge! Help your kids think outside the box...." Read more

"...'ve already completed to make others since there are not enough special pieces to go around...." Read more

37 customers mention "Paper parts"2 positive35 negative

Customers find the paper parts in the book to be flimsy and easily breakable. They also mention that the cardboard pieces become shopworn in a short time. Customers also mention the box is filled with hollow cardboard and a few Lego pieces.

"...the product if it hadn’t been damaged, he likes but the paper components were disappointing and will not last long...." Read more

"...make it all go together are printed on cardboard, and the cardboard becomes shopworn in fairly short order...." Read more

"The balls were basically plastic marbles . I liked it had Legos. It was still a bit struggling (challenging) to put together." Read more

"...that some of the things are cheaply made because it uses paper in some of the contraptions but my son still enjoys it...." Read more

Very good idea
3 out of 5 stars
Very good idea
Very good idea, of this creation in collaboration of lego and Klutz Science, but I was a little disappointed I imagined a little more on the part of the product perse, the outlay is high by little. however my son has enjoyed it.
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Top reviews from the United States

Samrat Roy
5.0 out of 5 stars A highly engaging and educational kit that combines the fun of building with the learning
Reviewed in the United States on July 23, 2024
Style: Chain ReactionsVerified Purchase
LEGO Chain Reactions is a science and engineering kit designed to teach children (and even adults) about the principles of physics through fun, hands-on activities. The kit encourages users to build 10 different moving machines, each designed to trigger a chain reaction. It's suitable for children aged 8 and up and can be used as an educational tool to foster creativity and problem-solving skills.

Key Features
Comprehensive Kit:

The kit includes 33 LEGO pieces, instructions for 10 different machines, and essential elements like ramps, gears, and string.
Additional components, such as balls and paper ramps, help in creating more elaborate chain reactions.
Educational Value:

Teaches basic physics concepts like cause and effect, momentum, and gravity.
Encourages critical thinking and problem-solving as children figure out how to connect different machines to create a continuous chain reaction.
Illustrated Instructions:

The included book provides clear, step-by-step instructions with colorful illustrations, making it easy for kids to follow along and build the machines.
Encourages Creativity:

While the kit includes instructions for 10 specific machines, it also encourages users to invent their own designs, enhancing creativity and innovation.
Pros
Engaging and Fun: The interactive nature of building and triggering chain reactions keeps children engaged and entertained.
Educational: Provides a hands-on learning experience that reinforces STEM concepts.
Easy to Use: Clear instructions and colorful illustrations make it accessible for children to use independently.
Expandable: Compatible with other LEGO sets, allowing for more complex and customized creations.
Cons
Limited Pieces: The set includes a limited number of LEGO pieces, so additional LEGO sets might be needed for more complex projects.
Requires Patience: Younger children might need adult assistance, especially when setting up more intricate chain reactions.
Fragility: Some of the constructed machines can be delicate and may require careful handling to avoid breaking.
User Experience
Positive Feedback: Users often praise the kit for its educational value and the fun, interactive learning experience it provides.
Family Activity: Many families enjoy using the kit together, finding it a great way to bond while learning.
Encourages Experimentation: Users appreciate that the kit promotes experimentation and creativity, allowing children to design their own chain reactions beyond the provided instructions.
Conclusion
LEGO Chain Reactions is a highly engaging and educational kit that combines the fun of building with the learning of basic physics principles. It is ideal for children aged 8 and up, providing an excellent platform for developing problem-solving and critical thinking skills. While the set's limited number of pieces may require supplementation for more elaborate designs, its compatibility with other LEGO sets makes it a versatile addition to any LEGO collection. Overall, it's a valuable tool for both learning and play, fostering creativity and innovation in young minds.
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tenor1
5.0 out of 5 stars Well executed by the authors. Think about these things before purchase.
Reviewed in the United States on February 27, 2015
Style: Chain ReactionsVerified Purchase
This was not an easy concept for the authors and product planners to execute. It's radically different than just assembling Legos from an instruction booklet. A lot of thought and effort went into the chain reaction concepts and resulting projects. The book layout, the security so that the parts actually arrive at the consumer, the durability of the non Lego paper components, the directions on how to fold the paper components etc, etc, etc. are thoughtfully done. I think they struck a very good balance so this would not cost an arm and a leg. Some might call it cheap (a few Lego pieces, a beautiful well laid out instruction book with nicely printed paper components) but I call it cost effective. A lot of what you're paying for here is in my opinion is the wow factor of the book and the well thought out concepts.

I supported my 7 year old grandson's effort to build the first project. My 5 year old grandson looked at what was involved and walked away I think because it looks complicated and the projects contain very few pieces. Both of them are very skilled Lego builders who pride themselves on their ability to throw lots of pieces together quickly. Does that sound familiar to you?

So... I think what motivates most young Lego builders is assembling lots of pieces quickly and having a relatively static object to play with when done. The chain reaction projects aren't that at all. They don't look like much -to an adult - when complete. They are challenging in my view mostly because of the need for precision alignment between the paper parts and the Lego motion actuators the kids assemble to create the Chain the Reaction. Once assembled and aligned, making it function can require trial and error, motivation to succeed, precision hand and eye coordination and patience. I think that doing the first project successfully might be a make or break point for this product. Failure would surely be a deterrent towards doing subsequent projects in the book so initial success seems very important at least for younger children. The greatest joy my grandson experienced (and it was great joy) was the moment the first project functioned properly for the first time after several complete and partial failures (just as his patience was wearing thin) and then joy again once the chain reaction was rehearsed and easily repeatable so as to show his parents without failure. Having achieved this first success he was excited about doing more projects. It remains to be seen what his long term interest level will be.
Yes.. This is radically different than just sticking prices together and success is not easy considering that the projects are minimalist in the total number of pieces. However I think the lessons and skills this product teaches are very important, worthwhile and noteworthy. Aside from the skills mentioned above this is also elementary physics of motion, weight, angle, momentum, etc. In summary, it appears that, assuming success along the way, the complicated chain reactions are fun for children to assemble, challenging to make fully, reliably functional and thrilling once they work for that first time. It's all good stuff!
1,762 people found this helpful
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Maggie
4.0 out of 5 stars Christmas Gift for 10 Year Old
Reviewed in the United States on June 2, 2024
Style: Chain ReactionsVerified Purchase
My granddaughter had this on her Christmas list. She's a HUGE Lego fan so of course, Grandma got it for her for Christmas. She learned a lot while having fun. The book helps you build Lego machines that move individually and can be connected - hence the "chain reaction".
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Top reviews from other countries

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Nilton Tadeu Ferreira Filho
5.0 out of 5 stars Muito divertido
Reviewed in Brazil on July 18, 2024
Style: Chain ReactionsVerified Purchase
Esse lego é muito divertido de montar e fazer as experiências, só poderia estar em português
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iliana
5.0 out of 5 stars FOMENTA LA CREATIVIDAD
Reviewed in Mexico on June 17, 2024
Style: Chain ReactionsVerified Purchase
Es un buen juguete. Buena calidad. Fomenta la creatividad. Vale la pena regalarlo.
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SaskGal
5.0 out of 5 stars Xmas gift
Reviewed in Canada on November 30, 2021
Style: Chain ReactionsVerified Purchase
The boy who is to receive this Xmas gift has received Lego from a very early age and enjoys any new and unusual Lego product I can find. I know he will love it. Lego is very educational in that it causes the child to create recognizable frames and problem solve when what he wants to achieve is not coming together the first time he tries. He keeps trying and feels satisfaction with the outcomes.
2 people found this helpful
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Stu
5.0 out of 5 stars Kids love it.
Reviewed in the United Kingdom on July 11, 2024
Style: Chain ReactionsVerified Purchase
Bought for our Grandson. He gets fun from it which is all that matters. I'd like to see kids get away from plastic toys and get back to a more modern version of mecano we had in the 70's.
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VCGLL
5.0 out of 5 stars Nice nice!
Reviewed in the Netherlands on December 5, 2023
Style: Chain ReactionsVerified Purchase
It is just a nice book from lego with extra pieces to learn aboutchain reactions. My boy loved it.
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