Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

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Sub Image1:Atoms and Molecules
1) Atoms and Molecules
2) Macro to Micro Structures 3) Energetics and Dynamics 4) Theory and Practice in Chemical Systems 5) Chemical Design 6) The Chemistry of Life 7) Chemistry and the Environment 8) Chemistry at the Interface

Unit 1.6 The Mole
This section deals with the concept of the mole. Interviews with students reveal their uncertainty about the concept. An activity is presented to help students visualize what a mole is by combining a familiar game with chemical calculations.

Video program cues: 33:40-42:40

What is a mole?

Students’ ideas

"I think this is the 6.02x1023 thing…."

"Something that hunches underground-an animal-and it digs…."

"It's used for calculating lots of chemistry equations…."


  • National Mole Day home page. National Mole Day is celebrated, October 23 (10-23) each year. Resources are listed.

About the mole

"The primary unit for the amount of substance in a chemical element is the mole, and if you are talking about the stoichiometry of a reaction, the mole is the basis for that."

Dr. Willie May
National Institute of Standards, Maryland

Rohrig, B. (2000) 'Fizzy Drinks: Stoichiometry You Can Taste, 'Journal of Chemical Education, Vol. 77, No. 12, pp: 1608A-1608B.

Periodic Table hopscotch laboratory

Leslie Pierce helps her students visualize the mole through a fun activity based on calculations.



  • "Mole" tutorial tutorials.
  • Explains what a mole is in chemistry and shows how to convert masses to moles. Other stoichiometric calculations are also shown.

Wakeley, D.M. (2000) 'Developing an Intuitive Approach to Moles, 'Journal of Chemical Education, Vol. 77, No. 8, pp: 1007-1010.

Proceed to Unit 1.7 arrow

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