As part of our ‘Operation Survival’ context, Primary 7 have been tasked with finding clean water on the island of ‘Newtopia.’ We designed a water filter to clean dirty water, and took part in experiments to find the only clean drinking source on the island. We also have been learning about he pH scale, and we created Universal Indicator out of red cabbage. We used the indicator to help us identify the pH of various water samples.
Angus: “Acids and alkalis turn the universal indicator different colours.”
Stuart: “We predicted what would happen in our experiment – we were right!”