This first link is to a video explaining how microwaves work. It also goes into detail about how the heating ability of microwaves was first discovered. https://www.youtube.com/watch?v=Jwxm-9X7DZE

This next link is to an article explaining how one can light a match through the use of a green laser. This article includes a video, tips, and warnings to be aware of when using laser pointers. It is an interesting read!
https://sciencing.com/light-match-green-laser-pointer-5654765.html

This website includes a variety of ideas to use when teaching about heat and insulation. The example activities are for a wide age range of students. One example, used to teach kindergartners about insulation, has the students exploring the different coverings of various animals.
https://beyondpenguins.ehe.osu.edu/issue/keeping-warm/lessons-and-activities-about-heat-and-insulation

Through this website, you can see the current temperatures in both the United States, and the rest of the world. It includes viewing the current temperature or viewing the feels-like temperature in these areas.
https://www.wunderground.com/maps/temperature/us-current