With the arrival of spring Karolina Wojtulewicz, PhD, and Urszula Wolska-Świętlicka, MSc, sparked curiosity about the world in the resourceful 5-year-olds from Tadeusz Gajcy Primary School No. 58. The young scientists independently conducted the experiments on the effects of various substances on red cabbage juice, learned how to perform reduction cultures in petri dishes, and, using eggs as an example, observed why it’s important to brush your teeth after acidic meals. Finally, together they made a magical lava lamp and observed the evaporation of dry ice.