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🧩 Build brilliance, spark curiosity, and join the chain reaction revolution!
Lego Chain Reactions is a premium building kit featuring 33 LEGO elements, 6 balls, and a 78-page instructional book to create 16 innovative moving machines. Designed for ages 7+, it combines mechanical flexibility with engaging STEM learning, backed by a Parents’ Choice Award and over 1.5 million copies sold.






| Best Sellers Rank | 11,909 in Books ( See Top 100 in Books ) 4 in Children's Books on Computer Hardware & Robotics 7 in Children's Books on Inventions & Inventors 10 in Children's Books on Architecture |
| Customer reviews | 4.5 4.5 out of 5 stars (23,001) |
| Dimensions | 25.49 x 4.45 x 25.67 cm |
| Edition | 1st |
| Grade level | 3 - 4 |
| ISBN-10 | 0545703301 |
| ISBN-13 | 978-0545703307 |
| Item weight | 644 g |
| Language | English |
| Print length | 48 pages |
| Publication date | 1 Jan. 2015 |
| Publisher | Klutz |
| Reading age | 8 - 12 years |
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