Create sim primer

[arouinfar]

• [x] Draft script - 6/13/18
• [x] Record rough version for script verification - 6/14/18
• [x] Review script verification draft, and adjust script as necessary - 6/14/18
• [x] Record another draft - 7/17/18
• [x] Review 2nd draft - 7/18/18
• [x] Produce primer and upload - 8/8/18
• [x] Caption primer - 8/8/18

[arouinfar]

@CWilson4960 the FAMB script is ready for recording. Please let me know if you have any questions!

[arouinfar]

The primer has been published to the PhET site, thanks @CWilson4960!