Alright, kiddo, let me try my best to explain replicas of the Jewish temple in a way that even a 5-year-old like you can understand.
So, a long time ago, Jewish people had a special place where they went to worship and do religious ceremonies. This special place was called the Temple. Sadly, the Temple was destroyed many years ago and the Jewish people have not been able to rebuild it.
However, some people feel very strongly about the Temple and want to make sure that it's never forgotten. So, they have made replicas of the Temple. That means they have made a copy of what it looked like and what was inside it.
These replicas can be really helpful for people who want to understand more about the Temple and how it was used. They can even be helpful for people who want to imagine what it was like to be there and worship.
So, that's basically what replicas of the Jewish Temple are. They are copies of something that was very important to some people a long time ago. They help us remember and learn about the past.