National curriculum content

• Compare and group materials together, according to whether they are solids, liquids or gases.
• Observe that some materials change state when they are heated or cooled, and measure or research the temperature at which this happens in degrees Celsius.
• Identify the part played by evaporation and condensation in the water cycle and associate the rate of evaporation with temperature.

Lesson objectives

• Sort and compare materials into solids and liquids
• Understand that gases have mass and describe how they move.
• Observe materials changing state when heated or cooled
• Identify the part played by evaporation and condensation in the water cycle
• To understand the link between the rate of evaporation and temperature within the water cycle
• To investigate the effect of temperature on chocolate

What we want children to know

• How to develop simple descriptions of the states of matter from a variety of everyday objects
• Know the changes which happen to water when it is heated or cooled
• How to group and classify a variety of different materials and explore the effect of temperature on different substances
• How to observe and record evaporation over a period of time
• To be able to investigate the effect of temperature on washing drying

What skills we want children to develop

• Ask relevant questions and use different types of scientific enquiries to answer them.
• Set up simple practical enquiries, comparative and fair tests.
• Make systematic and careful observations and, where appropriate, taking accurate measurements using standard units, using a range of equipment, including thermometers and data loggers.
• Gather, record, classify and present data in a variety of ways to help in answering questions.
• Record findings using simple scientific language drawings, labelled diagrams, keys, bar charts, and tables.
• Report on findings from enquiries, including oral and written explanations, displays or presentations of results and conclusions.
• Use results to draw simple conclusions, make predictions for new values, suggest improvements and raise further questions.
• Identify differences, similarities or changes related to simple scientific ideas and processes.
• Use straightforward scientific evidence to answer questions or to support their findings.

Vocabulary

Boiling point, boiling, condensing, evaporation, freezing, freezing point, gas, liquid, matter, material, melting, melting point, solid, temperature