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SugarByHalf - The Power of pH
Lesson1 of 4 in this unit
SecondaryYear 9 - 10ScienceBiologyChemistrySocialMental HealthPhysical Health
Lesson Summary
This lesson introduces the idea of acids and bases, using the context and framing of tooth decay. It offers a fun new hook into a very familiar, traditional part of the curriculum.
Students will come to understand how acids and bases work, but also learn about how it relates to the science of cavities, giving that knowledge an immediate and personal relevance in their everyday lives. The lesson ends with an opportunity for students to reflect on their learning; this learning in turn feeds into the science communication in the final lesson in this unit, Communicating the Science of Tooth Decay.
Learning intentions
Students will:
- understand how to describe properties of acids and bases
- understand the role hydrogen ions play in the acidic, neutral or alkaline properties of a substance
- understand the pH scale and how to use it to determine a substance's acidity or alkalinity
- understand how tooth decay occurs and what can be done to prevent or minimise it
Success criteria
Students can:
- identify the properties that make up an acid and a base
- label all of the features of a pH scale
- use a pH scale to help identify the strength of acids and bases
- reflect critically on the practice of teaching and learning
Lesson Guides and Printables
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