**Abstract**

This chapter expresses the views of a teacher-researcher who advocates and argues for the use of humor in the classroom setting, especially in the mathematics classroom. While existing research based literature has shown the use of humor to be promising and encouraging effecting teaching and learning tool, very little instructional humor or classroom humor–an appropriate type of humor often related to the content materials being discussed–has been used in the classroom setting–especially in the mathematics classrooms. The chapter explores, surveys and highlights ways in which the existing-related literature about the effective and appropriate use of humor in the classroom setting can be implemented in practice, especially in the teaching and learning of mathematics, in this challenging era of the increasingly rapid technological advancements referred to as 21th century technological revolution or the re-engineering of industrial education 5.0 relative to STEM subjects study areas. The use of humor as teaching and learning tool in the classroom setting has been shown to have so many associated benefits ranging from but not limited to a conducive-relaxed learning environment, enhanced students' learning experience, motivating and inspiring the students to learn more and even the improvement of student-teacher classroom rapport, just to mention a few. Hence, the literature recommends that classroom teachers should make more use of humor as an effective teaching and learning tool, especially the contextualizedappropriate humor types that are related to the content materials being discussed.

**Keywords:** Classroom humor, mathematical humor, interest in mathematics, teaching and learning
