G7 students are studying matter in Science this year and have started looking at changes of state. They planned investigations in small groups to find out what makes dry ice sublime faster. They completed detailed risk assessments, identified independent, dependent and controlled variables, wrote their research questions and hypotheses justified them with scientific reasoning. This week they were able to test all those hypotheses in the lab and have a lot of fun with dry ice. Students really enjoyed all the different small experiments we were able to do and were creative in suggesting other experiments to try. This investigation is allowing students to practice planning and designing investigations with all their components following the MYP experimental cycle in a formative way before they plan their metals experiments which will be assessed summatively using criteria B and C.