We begin with a visually engaging whole-class demonstration that introduces the concept of pH through colour change and controlled chemical processes. Rather than simply “showing an experiment”, the demonstration is structured around guided questioning and discussion. Students are prompted to: • Identify observable changes • Predict outcomes • Connect colour change to classification • Develop shared scientific vocabulary This opening segment builds conceptual understanding before moving into hands-on investigation.

Students participate in a structured investigation using both natural and laboratory indicators to classify a range of safe, everyday substances. The focus is not just testing — but: • Making predictions • Recording evidence • Comparing results • Identifying patterns • Justifying conclusions Activities are delivered in small-group stations to maximise participation while maintaining classroom control.

Students observe and analyse a safe, controlled acid–base reaction designed to highlight: • Evidence of chemical change • Gas production • Energy transfer • Reactants and products Rather than simply watching a reaction, students are guided to explain what is happening at a conceptual level and connect it back to classification and indicators.

This Primary School Science Incursion is intentionally mapped to NSW Science & Technology outcomes relating to: • Properties of matter • Observable physical and chemical changes • Classification of substances • Working Scientifically skills Teachers receive a clear overview of the links to Stage 2 and Stage 3 units, making integration into classroom programs straightforward.

Safety and classroom management are central to the program design. • All materials are age-appropriate and school-safe • Risk assessment documentation is available • Activities are structured for clear supervision • Demonstrations are controlled and professionally delivered The session is led by an experienced NSW teacher who understands classroom dynamics and behaviour management.

This Primary School Science Incursion is designed and delivered by a practising NSW classroom teacher with over 30 years of experience in science education. This means the session is structured as genuine classroom learning — not stage entertainment. Students are guided through questioning, prediction, observation and explanation, with clear links to Stage 2 and Stage 3 NSW Science & Technology outcomes. Because the presenter works within schools, the program is designed to: • Match classroom pacing • Reinforce Working Scientifically skills • Support existing teaching programs • Maintain appropriate behaviour expectations • Use accurate scientific language The focus is on deep understanding, not just visual impact.