Learning objectives
Knowledge
- To describe solutions and how they can be identified.
Working scientifically
- To make observations about solutions.
Success criteria
Knowledge
- I can define
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National curriculum
Science
Properties and changes
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Cross-curricular links
British values
- Mutual respect.
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Before the lesson
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Lesson plan
Recap and recall
Refer back to the class flipchart of the four types of mixture (solid-solid, solid-liquid, liquid-gas and gas-gas) noted in the Recap and recall activity in Lesson 2: Sieving. Ask the children to discuss the following questions with a partner:
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Extended-mode explainer videos
How to extend your display to view the lesson page and preseantion mode simultaneously. Choose your operating system below to watch the video
Adaptive teaching
Pupils needing extra support
Could use the Activity: Solutions results table: support version to record their observations about solutions; could choose the performance option for the Activity: Solutions spell as this only requires repetition of the spell; could use the different separation methods shown on the Knowledge organiser to help them identify how to separate the mixture in the Wrapping up activity.
Pupils working at greater depth
Could write their own version of the spell; could have gravel added to their mixture of salt, sugar and sand so they have to include the additional step of sieving; could identify and record a list of solutions found in the home or everyday life, such as any clear drinks or any clear cleaning products; could choose an extension activity relating to dissolving or solutions from the Resource: Stretch and challenge: Mixtures and separation.
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Assessing progress and understanding
Pupils with secure understanding indicated by: defining dissolving; describing
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Knowledge outcomes
- I can define dissolving as when a substance breaks apart and spreads out in a liquid.
- I can define a solution as a mixture of a liquid and a dissolved substance.
- I can name some common examples of solutions (including tea, saltwater, fizzy drinks and sugar and water).
- I can identify solutions as being clear with no visible particles.
- I can identify that non-solutions will be cloudy or have visible particles.
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Vocabulary definitions
-
dissolve
When a substance spreads evenly throughout a liquid.
-
insoluble
A substance that will not dissolve.
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