Mole Challenge: Can You Burrow Through This?
How do we count things that cannot be counted directly, such as the number of sand grains in the Sahara desert? And what does that have anything to do with Chemistry?
Teach, to Learn; Learn, to Teach
Are you a teacher and want to improve the learning outcomes of your students?
If you do, you also need to be learning, constantly, by looking for, and trying out, new ways of delivering your lessons.