This is a lesson on investigating rusting which spans over two days. It was designed to allow students to explore their curiosity about rusting and carry out a full investigation. The results of the investigation is not the focus here, it is the procedure students use to answer an exploratory question.
In this lesson, the teacher is the facilitator and the provider of the materials required for the investigation. There is no recipe-style procedure the students are expected to follow. Instead, the students plan the experimental procedure, select the variables to vary and control.
The materials used in this lesson are available and affordable.
The first lesson involves checking in on students’ prior knowledge, and to instruct on safety. The students then set up the investigation following their curiosity. They are encouraged to keep detailed records of their procedure, including illustrations of what they do and how they do it.
Second lesson they collect the data and work on how they are going to share their observations with the rest of the class. A set of probing questions are provided to help students direct their thinking. They think about their experimental design, the results obtained, and what they might want to do next to explore this idea further.