Playing gambling in front of children is the same as teaching children to gamble because children are good imitators. So stop gambling in front of you because the impact will be very big on his education. Gambling is something that is not good, even for adults gambling can have bad consequences, especially for children, of course their minds are not smart enough to see the negative impacts of gambling.
Impact on education - playing blackjack might teach them to count to 21 quickly
Kids are imitators, but they dont imitate everything parents do. If they were complete imitators, parents would never punish then for misbehave. Or we would have little 7yo adults. Ever imagined how people in countryside live? What they do with pigs, sheeps, cows or chicken when they are hungry? Strange that we dont have little maniacs that see adult kill animals for food.
Anyway, show me an example of any kid who is addicted to gamble. But not use gambling as just a method to get some easy money.
A child who will grow up into an adult to gamble will gamble, if he or she doesn't learn it from his or her parents, there are school mates to learn from, there are friends to learn from, there are work colleagues to learn from.
Using myself as an example, my parent never gambled, in fact, they are so uneducated that they don't even know what the word "gambling" mean, not to talk of engaging in it, but then, here am i, I gamble, and who thought me? Definitely not my parents.
So, whether we play gambling game in front of our kids doesn't really matter, most slot games looks exactly like the many mobile games children play for fun, in fact, children can't tell the different except if told, so, it's very likely a child can watch his or her dad playing slot game, and assume that the dad is playing one of those mobile games the child's often plays.