lecture ready

slides/lesson1_slides.qmd

@@ -40,21 +40,17 @@ output-location: fragment
 
     ![Data science workflow](https://d33wubrfki0l68.cloudfront.net/571b056757d68e6df81a3e3853f54d3c76ad6efc/32d37/diagrams/data-science.png){width="550"}
 
-## Culture of the course (1/3)
+## Culture of the course
 
 . . .
 
--   Challenge: We are learning on the job, but you already have a full-time job
+-   Challenge: We are learning a new language, but you already have a full-time job
 
 . . .
 
 -   *Teach not for mastery, but teach for empowerment to learn effectively.*
 
-. . .
-
--   *You should understand the gist of the material with class time, but mastery takes practice and practice.*
-
-## Culture of the course (2/3)
+## Culture of the course
 
 -   Challenge: We sometimes struggle with our data science in isolation, unaware that someone two doors down from us has gone through the same struggle.
 
@@ -64,105 +60,71 @@ output-location: fragment
 
 . . .
 
--   *You might make a new friend, or two. 😄*
-
-## Culture of the course (3/3)
-
--   Challenge: We all have various personal goals and applications.
-
-. . .
-
--   *Curate content during open community sessions and office hours based on your inputs.*
-
-## Code of Conduct
-
-. . .
-
--   **Be considerate** in speech and actions, and actively seek to acknowledge and respect the boundaries of other members.
-
-. . .
-
--   **Be respectful -** Disagreements happen, but do not require poor behavior or poor manners. If someone asks you to stop, then stop.
+-   *Know that if you have a question, other people will have it.*
 
 . . .
 
--   **Refrain from demeaning, discriminatory, or harassing behavior and speech**.
+-   *Asking questions is our way of taking care of others.*
 
 . . .
 
-The full CoC can be found [here](https://github.com/fhdsl/coc).
+We ask you to follow [Participation Guidelines](https://hutchdatascience.org/communitystudios/guidelines/) and [Code of Conduct](https://github.com/fhdsl/coc).
 
 ## Content of the course
 
 1.  Intro to Computing
 
-. . .
-
 2.  Data structures
 
-. . .
-
 3.  Data wrangling 1
 
-. . .
-
 4.  Community Session 1 (optional)
 
-. . .
-
 5.  Data wrangling 2
 
-. . .
-
 6.  Data visualization
 
-. . .
-
 7.  Community Session 2 (optional)
 
-. . .
-
 8.  Putting it together: preview for code-a-thon (Tuesday Nov. 12)
 
-. . .
-
 9.  Code-a-thon: Friday Nov. 22
 
 ## Format of the course
 
 . . .
 
--   Streamed online, recordings will be available.
+-   Hybrid, and recordings will be available.
 
 . . .
 
 -   1-2 hour exercises after each session are encouraged for practice.
 
 . . .
 
--   Optional time to work on exercises together on Fridays 10am - 11am PT.
+-   Office Hours Fridays 10am - 11am PT.
 
 . . .
 
 -   Online discussion via Slack.
 
-## What is a computer program?
+## Ready?
 
-. . .
+![](images/horst_community.png)
 
--   A sequence of instructions to manipulate data for the computer to execute.
+## What is a computer program?
 
 . . .
 
--   A series of translations: English \<-\> Programming Code for Interpreter \<-\> Machine Code for Central Processing Unit (CPU)
+-   A *sequence* of instructions to manipulate data for the computer to execute.
 
 . . .
 
-We will focus on English \<-\> Programming Code for Python Interpreter in this class.
+-   A series of translations: English \<-\> Programming Code for Interpreter \<-\> Machine Code
 
 . . .
 
-Another way of putting it: **How we organize ideas \<-\> Instructing a computer to do something**.
+We will focus on English \<-\> Programming Code for Python Interpreter in this class.
 
 ## Setting up Google Classroom and Colab and trying out your first analysis!
 
@@ -178,17 +140,23 @@ https://forms.gle/zFZ3VB1QZ84Y8Uef6
 
 ## Grammar Structure 1: Evaluation of Expressions
 
+Consider the expression:
+
+```{python}
+min(2, 10)
+```
+
 . . .
 
--   **Expressions** are built out of **operations** or **functions**.
+-   **Expressions** are built out of **functions** or **operations**.
 
 . . .
 
--   Functions and operations take in **data types**, do something with them, and **return** another data type.
+-   Functions and operations take in **data types** as inputs, do something with them, and **return** another data type as ouput.
 
 . . .
 
--   We can combine multiple expressions together to form more complex expressions: an expression can have other expressions nested inside it.
+-   If the function or operation input contains expressions, evaluate those expressions first.
 
 ## Examples
 
@@ -250,7 +218,7 @@ add(18, add(21, 65))
 
 ![](images/function_machine.png){alt="Function machine from algebra class."}
 
--   A programmer should not need to know how the function or operation is implemented in order to use it - this emphasizes **abstraction** and **modular** thinking.
+-   A programmer should not need to know how the function or operation is implemented in order to use it.
 
 . . .
 
@@ -265,14 +233,14 @@ add(18, add(21, 65))
 | String         |           str           | "hello", "234-234-8594" |
 | Boolean        |          bool           |       True, False       |
 
-## Grammar Structure 2: Storing data types in the environment
+## Grammar Structure 2: Storing data types as variables in the environment
 
 . . .
 
 To build up a computer program, we need to store our returned data type from our expression somewhere for downstream use.
 
 ```{python}
-x = 18 + 21
+age = 18 + 21
 ```
 
 . . .
@@ -284,7 +252,7 @@ Evaluate the expression to the right of `=`.
 
 Bind variable to the left of `=` to the resulting value.
 
-The variable is stored in the environment.
+The variable is stored in the **environment**.
 :::
 
 ::: notes
@@ -295,86 +263,77 @@ The variable is stored in the working memory of your computer, Random Access Mem
 
 ## Downstream
 
-Look, now `x` can be reused downstream:
+Look, now `age` can be reused downstream:
 
 ```{python}
-x - 2
+age - 2
 ```
 
 . . .
 
 ```{python}
-y = x * 2
-y
+age_double = age * 2
+age_double
 ```
 
 . . .
 
 What's the data type of a variable?
 
 ```{python}
-type(y)
+type(age_double)
 ```
 
-## Grammar Structure 3: Evaluation of Functions
-
-A function has a **function name**, **arguments**, and **returns** a data type.
+## More examples
 
-::: callout-tip
-## Execution rule for functions:
+-   `max(a, b, ...)` takes in at least two Integer or Float input arguments, and returns the highest value. You can give it more than two input arguments.
 
-A function's input arguments, when there's more than one, can be specified by:
+-   `pow(base, exp)` takes in two Integer input arguments, and returns the `base` raised to the `exp` power.
 
--   The order the input given: `pow(2, 3)` is different than `pow(3, 2)`.
+-   `dir()` takes in no input arguments, and returns all the variables in the environment as a list.
 
--   The name of the input argument: `pow(base=2, exp=3)`.
-
-If the arguments contain expressions, evaluate those expressions first!
-:::
-
-## Examples
+. . .
 
 ```{python}
-pow(2, 3)
+max(len("hello"), pow(2, 3), 20)
 ```
 
-```{python}
-pow(base=2, exp=3)
-```
+. . .
 
 ```{python}
-pow(exp=3, base=2)
+age = 35 - 5
+score = max(age, pow(2, 3), 20)
 ```
 
 . . .
 
 ```{python}
-max(len("hello"), 4)
+dir()
 ```
 
-## Learning a new function
+## Lists
 
-1.  Function documentation
+**List** is a data structure that stores many elements of various data type, and the order its elements are stored matters. Each *element* of a List contains a single data type, or single data structure.
 
-```         
-?pow
+You can create a List via the bracket \`\[ \]\` operator:
 
-pow(base, exp, mod=None)
-Equivalent to base**exp with 2 arguments or base**exp % mod with 3 arguments
-
-Some types, such as ints, are able to use a more efficient algorithm when
-invoked using the three argument form.
+```{python}
+chrs = [2, 3, 2, 1, 2]
 ```
 
 . . .
 
-2.  Documents page of a Python Module
+Then, you can access the elements of a list via its "index number", starting at 0.
 
-[Base Python documentation of `pow`](https://docs.python.org/3/library/functions.html#pow)
+```{python}
+chrs[0]
+```
 
 . . .
 
-3.  Forums vetted by experts, such as [SlackOverflow](https://stackoverflow.com/questions/tagged/pow+python)
+```{python}
+chrs[1]
+```
 
 ## Tips on writing your first code
 
@@ -394,7 +353,7 @@ Even the smallest spelling and formatting changes will cause unexpected output a
 
 . . .
 
--   Live environments are great for testing, but not great for reproducibility.
+-   The sequence of instructions you give matters!
 
 . . .