When a colour change becomes a research question

Why does a natural dye change colour when an acidic or alkaline solution is added? This question provided the starting point for the workshop “Natural Dyes: From Observation to Measurement”, delivered by two Rudolfovo researchers during a chemistry lesson at Gimnazija Novo mesto.

Students observed how anthocyanins changed colour in acidic and alkaline solutions and explored explanations for what they saw. The workshop introduced them to the research process, from formulating a research question and hypothesis to conducting an experiment and interpreting the findings.

Meeting researchers gives students an opportunity to connect classroom knowledge with practical investigation and get to know the people who work in science every day. In this workshop, colour changes sparked the investigation, while asking questions, observing and testing predictions were at the heart of the activities.

The workshop took place as part of the Rhythm of Life project’s Researchers in Schools activities. We thank Gimnazija Novo mesto for the invitation and collaboration.