In Bremen teachers worked on an activity called “the chameleon bubbles”, alginate bubbles filled with an acid-base-indicator. By changing the pH-environment around them, the bubbles change their color. Recently, Johanna Dittmar and Christian Zowada (a MEd student at the University of Bremen) developed new amazing bubble experiments by filling the bubbles with a vitamin B solution to make them fluorescent under UV light. Other bubbles were filled with a thermo ink that clearly visualises thermal conduction. Report on the bubble experiments will be published soon in the Journals Chemistry in Action and Science in School. Videos of some experiments will be available soon on the TEMI YouTube channel.