HARDEST KIDS TOY EVER.

Seriously, I bought this to play with Haylee tonight, I thought I’d be able to teach her something about electricity. Well, I remember the basics from science class in high school, and this toy is recommended for ages 8 and up, so I figured they’d make it fairly easy.
I remembered what happened with experiment #1 & #2, and I felt like I was teaching my daughter something. They were pretty basic, you hook up the batteries, a switch and a light bulb in a series and let them go. For #2, you just replace the light bulb with a small fan and you’re set.
I got to explain that electricity needs to flow out one end of the battery and back into the other in order for anything to work, and that when you flip the switch, you’re opening up the circuit, so the electricity can’t flow anymore, and the light goes off. Then I removed the switch, and showed her in more obvious ways what I meant by taking one of the jumper cables instead and connecting and reconnecting it where the switch used to be.
Then we got to experiment #3. Hooking it up and making it work was really easy, assemble as pictured and it works the way it says it does. But trying to make sense of how it works…..I spent nearly 2 hours doing research, and I’m still not really sure I get it!

So, energy flows from positive to negative. So, if we hook this up, then turn the switch on, the power starts by splitting off in 3 ways, one to power the speaker, which then goes back into the U1, another to the WC (this is a sound sensitive switch), and one directly into the U1. Then it goes from the U1 back to the battery completing the circuit.
So, in order to explain what is happening with this setup, and why it works, I think I need to figure out what’s happening inside this big box labelled U1. So, I start flipping through the book for an explanation what’s going on, so that we can make this a learning experience instead of just an exercise in following directions. Here’s the explanation from the manual:

But now, this labelling system confused me. If this diagram is correct, I’m connecting the negative terminal on the battery to the negative terminal on the U1, and also the positive to the positive. I thought we weren’t supposed to do that? I thought you connect negative to positive, so that the output from one goes to the input on the other.
At this point I’m pulling out my google-fu to try and figure this out. It doesn’t make sense to me anymore. Furthermore, the diagram doesn’t really explain what’s happening in the U1 at all.
When I first flip the switch, it plays its song to the end, then stops. Then, if I trigger the WC (by clapping loudly) it plays it again. I’m kinda guessing at what’s happening inside the U1, but I’m not really sure if this is right, and it would be nice if I got an actual explanation so that I could tell Haylee what’s happening.
I figure that what’s happening is this (assuming the main switch is on):
I’ve got 3 parallel circuits, one always-on that connects straight to the U1, one that connects to the speaker and one that connects to the WC switch and then into the U1. Somehow, when you turn this thing on, the power triggers the WC, and the U1 then knows to close the circuit coming from the speaker and allow the music to play.
Then, when the song is done, the U1 opens the circuit from the speaker and turns the speaker off. Then, when you trigger the WC, for a brief second the U1 gets power from this other connection and re-closes the connection from the speaker and allows the music to play again.
But of course, most of this is guesswork since they don’t actually tell you what’s happening inside the U1. I’d like to teach Haylee what’s going on, but I don’t want to teach her junk science either, and I’m worried my guess might be wrong.
I really wish they would explain this stuff in the manual so that I could explain it to Haylee. Right now, she’s not really gaining any understanding, she’s just following directions and making stuff happen. I’d really like for her to know why things are happening.
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