There's a lot of advice online about how to take better photos of your kids. he search term "how to take better photos of your kids" is probably what brought you here. But I wanted to give you some perhaps not-so-common advice. It's practical advice for shooting real kids, not models—though I'm sure your kids are gorgeous. ;)
These photos are of my son. I'm biased, but he's a very handsome boy. Throughout my site you'll see photos of him. Almost always smiling, and often unaware of the camera, I've captured some great candid shots of him. But he's gotten older and is becoming more aware of the camera, and lately he's thrown me a curve ball.
Every time I pull the camera out, he's muggin' for it. Goofy faces. Rockstar poses. Rabbit ears on his sister. Grumpy frowns.
Often, this has discouraged me from taking the photo. But recently, while my wife was away, wanted to document my time alone with the kids no matter what. I was determined. So when he made silly faces, I shot. When he made grumpy faces I shot. When he hid his face behind a grilled cheese sandwich I shot.
The result is this series of photos—including the dance sequence—that really capture who he is now. And that's important. So very, very important. Because I'll forget this phase when the next one comes along.
So my advice to you Mom and Dad is simple: take the photo. Capture them how they are, not how you wish they would be. Because in a few years you'll wish you had a photo from the time she stuck a french fry up her nose.
She of course will be less excited.