Mole Day was first celebrated in 1991 by a group of chemistry teachers who wanted to encourage students to see that chemistry is interesting and fun and possibly even consider a career in this field. Mole Day is celebrated from 6:02am to 6:02pm on October 23 to commemorate Avogadro’s Number, a basic measuring unit in chemistry.

Here are some resources to help students celebrate Mole Day, which is part of National Chemistry Week.

• Mole Day Celebration– Fun ideas to celebrate Mole Day
• Introduction to Mole Day– Lesson that helps students understand the relationship between a counting unit, mass, and number of particles. This is Day 2 of the lesson.
• From Molecules to Mole Day Do’s– Lesson for students in grades 10-12 to familiarize them with the mole concept.
• Mole Day from the American Chemical Society– This site is packed with ideas to learn about and celebrate Mole Day.