**Topics from today's class**:

- Reidemeister moves
- Links
- Oriented links
- Linking number for oriented links

**Homework**:

- Turn in: 1.10, 1.13 (draw a sequence of pictures—not necessarily one Reidemeister move at a time, though), 1.14, 1.15, 1.16
- Update your "pet knot" page as I mentioned in class
- Do not turn in: 1.18/1.19 if you can't come up with these yourself (they're tricky!) look them up online

**Presentations**:

- We need some new volunteers. If you haven't presented yet, please be prepared for Monday

**Read for next class**:

- 1.5

**Announcements**:

- Here are the links to the two papers I mentioned in class
- Here is a link that gives Gauss' integral for the linking number