I love to use this PowerPoint on my new Smart Board! It allows students (or teacher) to add real numbers to a blank and building Venn diagram. The last slide is a blank Venn diagram that students may use as guided notes when following along. The concepts covered are NATUARAL NUMBERS, WHOLE NUMBERS, INTEGERS, RATIONAL NUMBERS, and IRRATIONAL NUMBERS. I like to add a little discussion on non-real numbers when I use this with advanced students. The activity can be changed or expanded in many ways, and I provide a few suggestions in the presentation. ENJOY!
I've been teaching mathematics, international studies, and media design since 1998 in an urban district located in the southeast region of the USA. Before becoming a teacher, I worked as an electrical engineer for several years.