Reception Floating and Sinking Science Lesson Pack

Help children investigate why some objects float while others sink with this practical Reception floating and sinking science lesson. Through hands-on testing, prediction and recording activities, children explore how different materials behave in water and begin developing confidence in scientific observation.

Children make predictions, test a range of objects and record their findings using simple scientific records. They also investigate how air can move floating objects through water and design simple boats to explore what helps objects stay afloat.

What is included in this Reception floating and sinking lesson?

• Interactive teaching slides introducing floating and sinking
• Floating and sinking recording sheet
• Practical investigation using a range of everyday objects
• Prediction and results recording activities
• Air-powered cork challenge using straws and water trays
• Boat-building investigation using different materials
• Full lesson plan with teacher-led, independent and continuous provision activities

Exploring floating and sinking in Reception science

Children investigate which objects float and which sink, making predictions before testing their ideas. Through discussion and observation, they begin recognising that different materials behave differently in water and that some floating objects contain trapped air.

The lesson also introduces simple recording skills as children draw, tick and discuss their results. These activities help children communicate their observations and build confidence in scientific enquiry.

Developing scientific enquiry and recording skills

• Making predictions before testing
• Recording results using simple scientific records
• Observing and comparing materials
• Discussing observations using scientific vocabulary
• Exploring the role of air in floating and movement

This lesson forms part of our Reception States of Matter science unit within the EYFS Science Scheme. The unit helps children develop scientific enquiry skills while exploring solids, liquids, gases and the properties of materials through practical investigations.