Sources and Forms of Energy · B4 Science

Lesson notes

Learning Objectives

Indicator: B4.4.1.1.1 - Identify the effect of heat on the change of state of substances

By the end of the lesson, learners can:

Observe and describe what happens to water when it is heated and when it is cooled, using the correct terms (boiling, evaporation, condensation).
Demonstrate that boiling water produces steam and that the amount of water decreases as it boils.
Measure and record the quantity of water before and after boiling to show that heat causes water to change into vapour.
Explain how steam or vapour can turn back into liquid water when it loses heat.
Apply the concept of change of state to everyday substances such as shea butter and candle wax, predicting what will happen when they are heated or cooled.

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Curriculum details

Strand: Forces and Energy (Strand 4)
Sub-strand: Sources and Forms of Energy (4.1)
Content standard: B4.4.1.1 - Demonstrate understanding of the concept of energy, its various forms, sources and how to transform and conserve it
Indicator: B4.4.1.1.1 - Identify the effect of heat on the change of state of substances
Suggested placement: Term 2, Week 10 (Week 22 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: Science Curriculum (Basic 4-6), 2019, p. 10
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

- Guide learners through simple activities to identify effects of heat on substances (use liquids and solids, e.g. water, shea butter, candles, etc.).
- Learners demonstrate evaporation by boiling water and discuss their experiences.
Note: let learners measure the quantity of the water before and after boiling to show the effect of heat on water.
- Elaborate on learners' ideas to explain how the escaping vapour can be changed into water (through the loss of heat).