Can you provide the teaching materials?
http://www.scottwoodward.org/temple_garment_properwearing.html
http://www.mormonthink.com/glossary/garments.htm
http://www.ldsendowment.org/clothing.html
https://www.lds.org/manual/true-to-the-faith/temples?lang=eng
http://exmormon.org/d6/drupal/The-new-garment-guidelines-Mormons-are-not-happy