Merge branch 'c11_notes'

Author: brownsarahm

_practice/2023-10-17.md

@@ -0,0 +1,16 @@
+1. Read about the Learn more about the [SHA-1 collision attach](https://shattered.io/) 
+1. Learn more about how git is working on changing from SHA-1 to SHA-256 and answer the transition questions below {index}`gittransition.md`
+1. find 2 more real world examples of using other number systems (either different bases or different symbols and bases) that are current. Describe them in {index}`numbers.md`
+2. Calculate the maximum number of git objects that a repo can have without needing to use more than the minimum number of characters to refer to any object and include that number in  {index}`gitcounts_scenarios.md`  with a title `# Git counts`. Describe 3 scenarios that would get you to that number of objects in terms of what types of objects would exist. For example, what is the maximum number of commits you could have without exceeding that number, how many files could you have? How could you get to that number of objects in the fewest number of commits? What might be a typical way to get there? Assume normal git use with porcelain commands, not atypical cases with plubming commands. *If you get stuck, outline what you know and then request a review.* 
+
+
+
+## gittransition
+```
+## transition questions
+
+1. Why make the switch?
+2. What impact will the switch have on how git works?
+3. Which developers will have the most work to do because of the switch?
+```
+

_prepare/2023-10-19.md

@@ -0,0 +1,5 @@
+1. Review [the course website releases](https://github.com/introcompsys/fall2023/releases) to get familiar with what content appears there
+2. Review the GitHub Action [files in your KWL repo](../tree/main/.github/workflows/) and make note of what if any syntax in there is unfamilar.   (note that link may not work on the rendered website, but will work on issues)
+3. Use quote reply or edit to see how I made a relative path to a location within the repo in this issue. 
+4. Use [`git log`](https://git-scm.com/docs/git-log) to view recent updates to the course website from the [October 12 class](https://github.com/introcompsys/fall2023/tree/c10) to the October 17 class release
+5. review the open PR about a build badge if you are intersted in that option and comment if anything is unclear or approve if it is helpful. 

_review/2023-10-17.md

@@ -0,0 +1,2 @@
+1. find 2 more real world examples of using other number systems (either different bases or different symbols and bases) that are current. Describe them in `numbers.md`. Include links to your sources and be sure that the sources are trust worthy. 
+1. Calculate the maximum number of git objects that a repo can have without needing to use more than the minimum number of characters to refer to any object and include that number in  {index}`gitcounts.md`  with a title `# Git counts`. Describe the scenario that would get you to that number of objects with the maximum *or* minimum number of commits in terms of what types of objects would exist.  Assume normal git use with porcelain commands, not atypical cases with plubming commands. *If you get stuck, outline what you know and then request a review.* 

activities/practice.md

@@ -82,4 +82,11 @@ Activities:
 
 Activities:
 ```{include} ../_practice/2023-10-12.md
+```
+## 2023-10-17
+
+[related notes](../notes/2023-10-17)
+
+Activities:
+```{include} ../_practice/2023-10-17.md
 ```

activities/prepare.md

@@ -61,4 +61,13 @@ Activities:
 
 Activities:
 ```{include} ../_prepare/2023-10-17.md
+```
+
+
+## 2023-10-19
+
+
+
+Activities:
+```{include} ../_prepare/2023-10-19.md
 ```

activities/review.md

@@ -76,4 +76,11 @@ Activities:
 
 Activities:
 ```{include} ../_review/2023-10-12.md
+```
+## 2023-10-17
+
+[related notes](../notes/2023-10-17)
+
+Activities:
+```{include} ../_review/2023-10-17.md
 ```