diff --git a/_includes/daily/week4.markdown b/_includes/daily/week4.markdown
new file mode 100644
index 0000000..549cf18
--- /dev/null
+++ b/_includes/daily/week4.markdown
@@ -0,0 +1,99 @@
+<div class="week">
+
+<div class="week_heading" markdown="1">
+## Week 4 
+</div>
+
+<div class="column_materials"  markdown="1">
+
+### Lecture 1
+
+[Project evaluation ](slides/project_evaluation.html)
+
+Looking at [Violet UML Editor](https://github.com/violetumleditor/violetumleditor) and 
+[Matplotlib](https://matplotlib.org/stable/)
+
+
+__Readings__ 
+
+- [Evaluating Open Source Projects](https://producingoss.com/en/evaluating-oss-projects.html) from _Producing Open Source_ by Karl Fogel
+- chapter four, Find a Project, of "Forge Your Future with Open Source" by VM Brasseur
+- section 4 of How-to-contribute guide from GitHub: [Finding a project to contribute to](https://opensource.guide/how-to-contribute/#finding-a-project-to-contribute-to)
+
+### Lecture 2
+
+Presentations of the Firefox add-ons projects.
+
+Team 1, [Insult Reminders](https://github.com/ossd-s24/insult-reminders)
+
+Team 2, [FocusPal](https://github.com/ossd-s24/FocusPal)
+
+Team 3, [Seshy](https://github.com/ossd-s24/Seshy)
+
+Team 4, [Election Header](https://github.com/ossd-s24/election-header)
+
+Team 6, [quotepop](https://github.com/ossd-s24/quotepop)
+
+Team 7, [WebPad](https://github.com/ossd-s24/WebPad/)
+
+Team 8, [Tyler1ify](https://github.com/ossd-s24/tyler1ify)
+
+Team 9, [TikTock](https://github.com/ossd-s24/TikTock)
+
+Team B, [weathermen](https://github.com/ossd-s24/weathermen)
+
+Team C, [StudyTool](https://github.com/ossd-s24/studyTool)
+
+
+</div>
+
+<div class="column_assign"  markdown="1">
+
+### Assignments
+
+__Due by the end of the week__:
+- Test out some of the add-on projects created by other teams. Report 
+any issues you find. If you are interested in contributing to the project, reach out 
+to its community to try to add features, fix issues, etc. 
+
+- Make your blog post for the week
+  - comment about your group work on the browser extension, did you learn anything 
+  about yourself and how you are able to work with others? 
+  - describe your own contributions to your team's efforts of building
+  your browser extension
+  - comment on new things you learned (tools, features of tools that you were not familiar with, etc) or
+  learned about yourself (skills you realized you have, team work preferences and style, etc.)
+  - comment on other teams presentations and their projects, did you have any favorites? 
+
+__Due by the end of Tuesday (2/20)__: 
+
+Watch one of the four video groups (you can watch more of them, but pick at least one). On the Wiki page labeled Social Good videos, put your name (first and last) under the group that you watched (again, you can put your name under more than one). We'll be talking about these in class next week. 
+
+Group 1: 
+  - [Opening the Loop. Autonomy, Access and Insulin](https://www.redhat.com/en/open-source-stories/opening-the-loop)
+  - [Healthcare Made Human](https://www.redhat.com/en/open-source-stories/common-connections/healthcare-made-human)
+
+Group 2: 
+  - [Food Computer](https://www.redhat.com/en/open-source-stories/farming-for-the-future/food-computer)
+  - [Farming for the Future](https://www.redhat.com/en/open-source-stories/farming-for-the-future)
+
+Group 3: 
+  - [Democratizing Knowledge in Higher Education](https://www.redhat.com/en/open-source-stories/live-talk-democratizing-knowledge)
+  - [Cracking the Textbook](https://www.redhat.com/en/open-source-stories/cracking-the-textbook)
+
+Group 4: 
+  - [The Science of Collective Discovery](https://www.redhat.com/en/open-source-stories/collective-discovery)
+  - [Open Data in Chile](https://www.redhat.com/en/open-source-stories/starting-small-open-data)
+  
+
+
+__Ongoing (but seems to be neglected by most)__:
+- Make _small_ open source contributions. Refer back to [Contributions you should be working on, slides](slides/contributions.html)
+from a couple of weeks ago for the types of contributions and the workflow for the course website contributions (use the same workflow if you wish to contribute to any of the add-on projects).<br/>
+A few things to keep in mind:
+- make sure links are clickable
+- remove the _template_ line from the table of your contributions
+- make sure your contributions are diverse, not targetting a single type (ex., only Wikipedia, or only course website)
+
+</div>
+</div>
diff --git a/_includes/daily/week5.markdown b/_includes/daily/week5.markdown
new file mode 100644
index 0000000..1a98509
--- /dev/null
+++ b/_includes/daily/week5.markdown
@@ -0,0 +1,47 @@
+<div class="week">
+
+<div class="week_heading" markdown="1">
+## Week 5
+</div>
+
+<div class="column_materials"  markdown="1">
+
+
+
+<span class="strong">__February 19 - No Classes Scheduled.__ </span>
+
+
+
+### Lecture 2
+
+Humanitarian/Social Good Projects  
+
+[slides](slides/HFOSS_short.html)
+
+[Humanitarian Free and Open Source Software](https://www.timreview.ca/article/399)
+
+[Helping Others Is the Highest Rated Career Value for Both Undergraduate and Graduate Students in Computing](https://cra.org/crn/2018/11/helping-others-is-the-highest-rated-career-value-for-both-undergraduate-and-graduate-students-in-computing/)
+
+
+### Assignments
+
+Due by the end of the week (i.e., Sunday)
+- Make your blog post for the week. Comment on 
+  the discussion with Mek.
+- Comment on your _small_ contributions: how are things going, what types of contributions were you able to make? what are the biggest challenges? which 
+contribution are you most proud of? 
+
+<!--
+- with your partner/group finalize the answers to the project evaluation activity
+- make your blog post:
+  - talk about the project evaluation activity that you completed, what were some surprising or unexpected  (good or bad) things you learned about the project you were looking at
+  - comment on one or two of the videos that you watched; what were some things that stood out? what did you learn?
+- [Christopher Snider](https://www.linkedin.com/in/christopherasnider/) will be our next invited speaker.
+  - familiarize yourself with the following materials (videos and articles): <a href="https://www.redhat.com/en/open-source-stories/opening-the-loop">Opening the Loop</a>, <a href="https://www.redhat.com/en/blog/how-open-source-making-diabetes-more-manageable">How open source is making diabetes more manageable</a>, <a href="https://opensource.com/article/22/2/transparency-open-source-healthcare-software">How radical transparency is transforming open source healthcare software</a>
+  - add a question for Christopher,  to the course wiki (add your own question, and enter a number 1 next to it; read through existing questions, and up-vote the questions you like (replace the number next to them with a number __one higher__; go back to the page towards the end of the week to cast your vote on additional questions if you like them)
+
+-->
+
+
+</div>
+</div>
diff --git a/daily.html b/daily.html
index d137c06..7a6bf61 100644
--- a/daily.html
+++ b/daily.html
@@ -5,6 +5,7 @@
     - "week1"
     - "week2"
     - "week3"
+    - "week4"
 ---