I also write fiction books, and the fictional character that I created was supposed to be called Seymour the mad scientist. My editor pointed out that that was a little bit too much, so we nicknamed him “Einstein” after the greatest scientist of the twentieth century, and his last name is Anderson. So, it’s Einstein Anderson, science detective. And I’ve written eight of those. Each of those have [sic] ten stories within them, and they’re science puzzles where Einstein interacts with the other children in his class, and something happens, and Einstein has to figure out what is happening. And the story stops, and the reader is challenged to explain what happened, using some scientific principle. And they turn the page, and the story continues, and Einstein explains to everybody.
Einstein is also, of course, an alter ego of myself. When I taught, I used terrible jokes and puns all the time, so Einstein is always punning and using terrible jokes which, of course, kids find enormously funny, because terrible jokes are what they like.