Why do higher interest rates bring down bond prices? (Explain to me as if I were a 7-year old Series #1)

One of the things that I developed when I became a full-time mom was to simplify abstract concepts. I would read books on Finance and life philosophies, then over dinner with my sons I would talk bits and pieces of the nuggets of wisdom I get from them in easy to understand language. In retrospect, I wasn’t only doing it for them…