accessibility-enhanced (ADA-compliant) version updated today

Based on early feedback, we updated just the accessibility-enhanced version of the student lab PDFs today. This update makes some minor corrections across all accessibility-enhanced lab PDFs, especially 3b.

Again, the formatting of this version minimizes challenges for visually impaired students, but for now, most students will prefer to use the original version as they will find it more cosmetically appealing.

The current original version is always found in this Google Drive folder (as before).

The current ADA-compliant version is always found in this Google Drive folder (as recently announced).