Sink or Float?A prediction, a test and a result — a real experiment in a washing-up bowl.KindergartenFill a bowl. Predict before you drop each thing in — being wrong is theinteresting part.1PREDICT"I think the cork will float because it feels light."2TESTDrop it in gently and watch.3SORTTwo piles on the towel: sank, floated.4LOOK FOR A RULEWhat do the floaters have in common? What about the sinkers?USUALLY FLOATScork · plastic lid · wooden spoon · appleusually sinks: coin · stone · spoon · marbleHeavy is not the rule — a big ship floats. Ask what else could matter.Sink or Float?learnposters.com
Sink or Float? — printable science wall chart from LearnPosters. Free vector PDF, US Letter and A4.

Sink or Float?, step by step

Fill a bowl. Predict before you drop each thing in — being wrong is the interesting part.

  1. PREDICT"I think the cork will float because it feels light."
  2. TESTDrop it in gently and watch.
  3. SORTTwo piles on the towel: sank, floated.
  4. LOOK FOR A RULEWhat do the floaters have in common? What about the sinkers?

usually floats

  • cork · plastic lid · wooden spoon · apple
  • usually sinks: coin · stone · spoon · marble

Heavy is not the rule — a big ship floats. Ask what else could matter.

Questions about the Sink or Float? poster

What’s on the Sink or Float? poster?
4 numbered steps, with a full worked run-through. Fill a bowl. Predict before you drop each thing in — being wrong is the interesting part. PREDICT — "I think the cork will float because it feels light."; TEST — Drop it in gently and watch.; SORT — Two piles on the towel: sank, floated.; LOOK FOR A RULE — What do the floaters have in common? What about the sinkers?. Heavy is not the rule — a big ship floats. Ask what else could matter.
Who is the Sink or Float? poster for?
Sink or Float? is filed under Kindergarten (ages 5–6), so it matches what that year asks a child to remember. It is equally useful to an older student revisiting science, and to the parent or teacher answering the question at the kitchen table.
When should you use the Sink or Float? poster?
Predict first, out loud, before anything goes in the water. The prediction is the science. A wall chart earns its place by being glanceable from where the work is happening, so Sink or Float? belongs on the wall where that science work actually happens, within glancing distance, rather than filed away.
What other posters go with Sink or Float??
Push and Pull, Where Animals Live and Butterfly Life Cycle sit alongside Sink or Float? in the Kindergarten set. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Push and PullWhere Animals LiveButterfly Life Cycle
Is the Sink or Float? poster free to download and print?
Yes. Sink or Float? downloads as a free PDF with no account, no email and no watermark, like everything else in the Kindergarten set. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
What size does the Sink or Float? poster print at?
Sink or Float? is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Sink or Float? loses nothing.Printing guide

Related posters

Charts that sit alongside Sink or Float? on the same wall.

Browse every Kindergarten poster, or start from the full catalogue.