I’ve had good success with this video in helping kids to understand bias. I pause it frequently and let them make their guesses (writing down their guesses if they can write) and let them “get it wrong” along with the adults. It’s powerful for them to see adults getting it wrong the same way they do and when they hear the explanation it is meaningful that adults and children can both be wrong in the same way.
Plus, it’s kinda a game, which makes it fun. Good family home evening lesson, but I’d cut off after the reveal as he kinda goes anti-religion after he explains what confirmation bias is.