Alright kiddo, you know how sometimes when you have a question or a problem, you ask an adult for help? And how sometimes they might give you an answer that they just made up in their head, but other times they might look it up or ask someone who knows, to make sure they give you the right answer?
Well, evidence-based practice is kind of like the second option. It's when grown-ups (like doctors, nurses, teachers, or scientists) want to make sure they're doing the best thing for someone, so they look at what other grown-ups have found out by doing research and experiments.
If a doctor wants to know the best way to help someone feel better, they might look at studies that other doctors have done to see what treatments worked the best for people with similar problems. Or if a teacher wants to find the most effective way to help students learn something new, they might look at studies about different teaching techniques.
So basically, evidence-based practice is a way for grown-ups to make good decisions by checking what other grown-ups have already found out through careful research and experimentation. It's like they're using a big book of grown-up answers to help them make sure they're doing the right thing.