This PowerPoint presentation introduces the concepts of controls and variables through the example experiment of: Does an umbrella's pattern/shape affect how well it works.
In this lesson, I typically ask the students to design an experiment based on the above question before starting the presentation. That way they can identify the variables and controls in their own experiments even if they didn't know that's what they were called.
Topics covered in the 20 slides include:
My presentations are oriented towards visual learners and thus contain a lot of images and color. Please download the preview file to get an idea of my work.
Feedback is much appreciated!