This paper describes ten simple thermal imaging experiments designed primarily for upper secondary students, but usable with younger pupils as well. The author's primary motivation was to come up with a meaningful use for a thermal imaging camera even if the teacher only has a short time to work with it--in the extreme case, only one lesson in each class (if he/she e.g. borrowed the camera from another school or university). Experiments create three logical sequences--interaction of IR with matter, mechanical experiments and thermal properties of matter. In the predict-observe-explain design, the sequences are continuously used in the Interactive Physics Laboratory, which allows the author to add some relevant notes and recommendations derived from authentic experience.