This does not make sense. These are not lies, but simplifications. The only lie seems to be the title itself. I would have expected Santa Claus, storks delivering babies, and perhaps even God, to show up under this heading. Count me disappointed.
The title is correct. Teaching kids that electrons orbit around a nucleus like a planet around the sun is a lie. It’s not even a rough simplification. We’ve known this for around a century. Yet that was the model I learned in high school, let alone grade school. I hated school precisely because there was no mystery. Everything was known. It wasn’t till later that I found out many of the models taught on the blackboar…
Of course its a simplification. You are talking to a kid! Not a graduate with high-school physics.
How else will you even attempt to simplify it to 10 years old?
It seems that you are also blaming a school teacher for not being a domain expert with PhD and up to date knowledge.
Most of teachers with decade or more are just that - teachers. Its their 9-5 job.