When expressing how something is done or demonstrated, the phrase "shows how" can be replaced with several synonyms. One alternative is the phrase "demonstrates," which means to show or prove something. Another option is "illustrates," which implies the use of examples to make a point. Similarly, "exemplifies" refers to providing examples as evidence. "Reveals" or "unveils" can be appropriate when discussing something previously unknown. "Exposes" can be used to indicate the revelation of hidden or deceitful information. Finally, "displays" can be used to simply describe the act of showing or exhibiting something. All these synonyms can add variety and nuance to language use.