Water Investigators: Sink-or-Float Science Guide for Ages 3–5

This printable teacher’s science guide introduces children ages 3–5 to floating and sinking through an open-ended water investigation. Children predict, test objects one at a time, observe the results, and talk about what they notice, while educators receive guidance for supervision, adapting participation, assessment, and extensions. Use it for a hands-on science activity that builds observation, prediction, and discussion skills. The guide also explains floating and sinking and encourages children to treat predictions as questions rather than right-or-wrong answers.