Bright, gentle, and unmistakably made for tiny humans. Kids Do SINK or FLOAT? - Cool Science Experiments for kids from Vlad and Niki is soft-spoken with cozy pastel visuals, and it slots neatly into the toy unboxing corner of any toddler's day. At roughly 20:10, it's a sensible length for short attention spans and has racked up 3,578,589 views plays from families around the world.

Uncle and Sasha collect objects and toys and try which of them Sink or Float. This is a science experiment for kids that shows the density of objects. 00:00 Kids Do SINK or FLOAT? - Cool Science...

What your toddler picks up

  • Anticipation and patience as the surprise reveals itself.
  • Vocabulary for everyday objects, packaging, and play scenarios.
  • Pattern recognition through musical repetition — choruses repeat, predictions form, confidence grows.
  • Rhythm and beat awareness, the foundation of both reading fluency and early math sense.
  • Emotional cues through expressive faces and friendly voices that model warmth and curiosity.

How to enjoy it together

Treat unboxing as an invitation to imagine, not a wishlist. Ask, "What would you do with a toy like that?" and steer the conversation toward play, not buying. Save the video for predictable transition moments — after lunch, before pickup — so it becomes a cue, not a default.

Sing, dance, repeat

The chorus is the kind that even the dog ends up tilting its head to. Expect the song to migrate beyond the screen — into the bath, into the car seat, into the moment your kid waits in line at the grocery store. That is a feature, not a bug. Once a tune lives in their head, the words and concepts come along for the ride.

About Vlad and Niki

Vlad and Niki is a familiar name in nurseries and preschools around the world, and parents recognize the style instantly. If you like this one, the rest of their videos are worth a browse.

Watching tips for tiny viewers

The American Academy of Pediatrics suggests keeping screen time short and shared for kids under five. Use a video like this as a co-watching moment: sit together, narrate what's happening on screen, and pause to point at colors or animals as they appear. After it ends, carry the song into the rest of the day — hum the tune at bath time, act out the animal noises during dinner, or pull out toys that match what you watched. The video is the spark; you and your child do the real magic with what comes next.