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Australia · Australian Curriculum Science · Year 5

AC9S5U04: Explain observable properties of solids, liquids and gases by…

Explain observable properties of solids, liquids and gases by modelling the motion and arrangement of particles. Taught in lessons 1 and 2.

The Australian Curriculum: Science, version 9.0 outcome AC9S5U04 (Science understanding) for Year 5 says: “Explain observable properties of solids, liquids and gases by modelling the motion and arrangement of particles. Taught in lessons 1 and 2.” This Fieldbook unit teaches it hands-on, with everyday materials and a printable teacher guide and student sheet for every lesson. Official wording: Australian Curriculum: Science, version 9.0.

Solids, Liquids and Gases Grade 5

Where does a puddle go? Why does ice float? A first look at the tiny particles that explain the stuff around us.

  • Where does a puddle go? 50–60 min

    Teams race wet paper towels in still air, in wind, in a warm spot and under a cup to find out what makes water disappear faster. They catch the 'missing' water on the inside of the cup and explain evaporation with particles.

  • Why does ice float? 50–60 min

    Students compare water before and after freezing: same weight, but more space. They float a block of ice, measure how much sticks out, and use particles to explain why lakes freeze from the top down and fish survive the winter.

Printable practice for AC9S5U04

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Compared with NGSS: 5-PS1-1.

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