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It's definitely 5 stars.
When I saw it on the internet, I was so inspired, it's really great and unusual idea, besides my very first job was designing digital integrated circuits so I high rated it.
Thank you for your efforts!
I really bought them for me and they she’d my grandkids as an excuse! Super cool, fun and keep it simple science.
My 2.5 year old son immediately took to it. The button and switches really catch his attention. I look forward to watching him understand the concepts more and more as he gets older.
The bundle is the way to go! My daughter loves the way that each page and concept affects the button pushing. She is obsessed, and will almost always bring the book over to me to "read" together! The "AND" buttons were a good challenge for her to pick up over time. (Age: 14 months)
We are really happy with both books. My 11 month grandson was immediately fascinated by the buttons, switches and lights. My engineer son loved it as well. When it arrived, I did have to email Chase as it didn’t work. Chase emailed back promptly with troubleshooting. That’s when I discovered that the books didn’t have any batteries. I placed a no. 2025 button battery in each and it worked perfectly.