Sink or Float Activity

Make a splash in science with this hands-on Sink or Float Sorting Activity for EYFS–KS2 learners! 💧⚓

This low-prep resource invites children to investigate whether everyday objects sink or float, then cut, sort and stick the matching pictures into the correct column. It’s a brilliant way to blend early science skills with fine motor practice in a playful, accessible way.

What’s included

• A selection of easy-to-find, everyday item pictures

• Sink or Float sorting mat with clear columns

• Cut-and-paste activity sheets ideal for individual, pair or small group work

How it works

1. With adult supervision, children test each real-life item in a tub of water.

2. They observe what happens – does it sink or float?

3. Learners then cut out the matching picture and paste it into the correct column.

4. Use the finished sheet to review learning, explain thinking, and spot patterns (e.g. “Lots of metal things sink!”).

Skills developed

• Scientific thinking – predicting, observing, testing and recording results

• Key science concepts – sinking vs floating, materials, and simple properties

• Language development – using vocabulary like sink, float, heavy, light, material, predict

• Maths & sorting skills – grouping objects, comparing, and talking about similarities and differences

• Fine motor skills – cutting, gluing, handling small pictures and arranging them carefully

Perfect for

• Whole-class investigations in EYFS, KS1 and lower KS2

• Science centres or investigation areas

• EAL learners who benefit from strong visual support and real-life context

• Home educators looking for a simple, engaging science activity using items they already have at home

This sink or float activity turns a simple tub of water into a mini science lab, helping children develop curiosity, confidence and control – one splash at a time. 🌊✨