Download the instructions and materials PDFs, located to the right.
Prep the activity beforehand and have all the materials ready and the activity plan read. Cut out the letter strips (with their transcriptions on the reverse side) and make sure you have vinegar, garlic, and some hard boiled eggs (or something that smells like sulfur) available. Read the activity plan to help with facilitation.
When APS staff facilitate the activity, it takes approx. 45 minutes. We've also been able to facilitate the lesson in 20 minutes when needed.