Foundations of Programming

Author: yanarchy

foundations.md

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+# Foundations of Programming
+
+## Objectives
+
+- Understand what a program is
+- Understand why JavaScript is a useful programming language for beginners to learn
+- Describe and use JavaScript _expressions_
+- Describe and use arithmetic _operators_
+- Describe and use `number` and `string` data _types_
+
+## Lecture Slides
+
+[Slides are here](https://docs.google.com/presentation/d/e/2PACX-1vSMm-b3hSJwjgc4TQe7YnXfVjpdgklt4Ma30sfWULU4jDxt0XplMXLX0vMem6cVBj8LDlbhtLSNpb4s/embed?start=false&loop=false&delayms=10000)
+
+## Exercises
+
+### Basic Requirements
+
+You will only need your Chrome browser with the developer console open for the following activities.
+
+#### Vocabulary
+
+Can you try to define the following in your own words?
+
+- _expression_
+- _operator_
+- _type_
+
+#### `number`s & `string`s
+
+##### `number`s
+
+1.  Enter the below expressions, line by line, into your Chrome console. What happens for each?
+
+    ```js
+    4 + 10;
+    1 * 3;
+    12 * 4;
+    4 % 2;
+    5 % 2;
+    5 / 1 - 99;
+    5000 * -100 * (1 + 2) * (5 * 6);
+    1241 / 9 + 99;
+    ```
+
+1.  Based on your work above, what does `%` do?
+
+1.  Calculate your age in minutes using the console.
+
+##### Bonus Section
+
+1.  The console is getting a little full. Use `clear()` to clean things up a little.
+
+##### `string`s
+
+1.  In your console, put your name in a `string`!
+
+1.  Use the `+` operator to _concatenate_ (join together) two or more
+    `string`s, _e.g._:
+
+    ```js
+    // Your first and last names as an example
+    "Yan " + "Fan";
+    ```
+
+    - Your first and last names (as shown above in the example code snippet)
+    - Your favourite singer's full name
+    - Code Chrysalis
+
+1.  Try the following in your console, line by line. What happens? Fix the errors:
+
+    ```js
+    Where are the quotes?
+    'hmm something is not right"
+    'Do other ' * 'operators work with string concatenation?
+    ```
+
+1.  We want you to get comfortable with actively exploring through code. Answer the following questions by coding to test the questions:
+    1.  What happens when I add a `string` and a `number` together?
+    1.  What if I reverse the order (e.g. `number` + `string`)?
+    1.  What happens if I multiply a `number` 5 with a `string` "5"?
+