This review has been updated 8 times since it was first published in February of 2019. Learning is always more effective when it’s fun, and these robotic arms can teach children the fundamentals of hydraulics in a way that’s incredibly engaging. They come with an array of difficulties and at various price points, so regardless of whether you’re trying to amuse a 7-year-old or challenge a class of high schoolers, you’re bound to find an option that works for you. When users buy our independently chosen editorial picks, we may earn commissions to help fund the review.
5. Discovery Kids DIY
4. TeacherGeek Advanced
3. Pitsco T-Bot II
2. Marbles Wonderology
1. Circuit-Test Edge
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