For parents who have more than 1 child, how do you ensure you're giving equal attention to all of your kids?

Spend quality time with each of them. Set a time every week na para lang sa isang anak. That way, sya lang ang focus ng attention mo and you can both do the things that she like.

My style would be: I-date sila isa isa na walang kasama na kahit sino kundi kayo lang.

involve everyone of them in every activities