This activity can help students improve their abilities to generate a testable research question and to conduct a scientific investigation in the context of teaching scientific concepts such as buoyancy and density.
During this activity, students make predictions as to whether a banana will sink or float when it is put into an aquarium filled with water. A teacher demonstrates what really happens when bananas are placed into the aquarium. After observing the demonstration, students generate a question and investigate what they want to know.
A discussion can focus on the consistency between data and a conclusion as asking students what data they have to support their answer. It is also important to address how scientists can take the same data as evidence to support two incomparable explanations.
Different kind of bananas, aquariums