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British Columbia · BC Science · Grade 4

Phases of matter and the effect of temperature on particle movement…

Phases of matter and the effect of temperature on particle movement (evaporation, freezing).

The BC Science K–9 (redesigned curriculum) outcome (Content) for Grade 4 says: “Phases of matter and the effect of temperature on particle movement (evaporation, freezing).” This Fieldbook unit teaches it hands-on, with everyday materials and a printable teacher guide and student sheet for every lesson. Official wording: BC Science K–9 (redesigned curriculum).

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.

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Compared with NGSS: 5-PS1-1, 2-PS1-4 (partial).

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