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Intro to Computingfundamentals~15 mins

HTML as the language of web pages in Intro to Computing - Deep Dive

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Overview - HTML as the language of web pages
What is it?
HTML stands for HyperText Markup Language. It is the basic language used to create and structure content on the web. HTML tells web browsers how to display text, images, links, and other elements on a webpage. It uses simple tags to organize content into headings, paragraphs, lists, and more.
Why it matters
Without HTML, web pages would be just plain text with no structure or style. HTML allows websites to be organized and readable, making it possible for people to navigate and interact with information online. It solves the problem of how to present content clearly and consistently across different devices and browsers.
Where it fits
Before learning HTML, it's helpful to understand what the internet and web browsers are. After HTML, learners usually study CSS to style pages and JavaScript to add interactivity. HTML is the foundation of web development and a starting point for building websites.
Mental Model
Core Idea
HTML is like the skeleton of a webpage, giving it structure and meaning so browsers know what to show and how to organize content.
Think of it like...
Think of HTML as the blueprint of a house. It shows where the walls, doors, and windows go, but doesn’t decide the paint colors or furniture style. That comes later with other tools.
┌─────────────────────────────┐
│          HTML Document       │
├─────────────┬───────────────┤
│ <head>      │ <body>        │
│ - Metadata  │ - Content     │
│ - Title     │ - Text, Images│
│             │ - Links       │
└─────────────┴───────────────┘
Build-Up - 7 Steps
1
FoundationWhat is HTML and its role
🤔
Concept: HTML is a markup language that structures web content using tags.
HTML uses tags like , , ,

,

to organize content. Tags are words inside angle brackets that tell the browser what each part means. For example,

is a main heading, and

is a paragraph.

Result
A browser reads these tags and shows the content with headings, paragraphs, and other elements arranged properly.
Understanding that HTML is about structure, not style, helps separate content organization from how it looks.
2
FoundationBasic HTML document structure
🤔
Concept: Every HTML page has a standard structure with , , and sections.
The tag wraps the whole page. Inside it, contains information like the page title and metadata, which browsers use but don't show directly. The contains the visible content like text and images.
Result
This structure ensures browsers know where to find page info and what to display.
Knowing the document structure is key to building valid and well-formed web pages.
3
IntermediateUsing tags to organize content
🤔Before reading on: do you think tags like
and change how content looks or just how it’s grouped? Commit to your answer.
Concept: Tags group content logically and semantically, helping browsers and search engines understand the page.
Tags like
create sections, while marks inline parts. Semantic tags like
,
Result
Content is grouped meaningfully, making pages easier to read for humans and machines.
Understanding semantic tags improves website accessibility and search ranking.
4
IntermediateEmbedding images and links
🤔Before reading on: do you think images and links are part of HTML structure or added by CSS? Commit to your answer.
Concept: HTML includes tags to add images and links, connecting pages and showing pictures.
The tag inserts images with a source URL and alt text for accessibility. The tag creates clickable links to other pages or resources.
Result
Knowing how to embed images and links is essential for creating engaging and connected web content.
5
IntermediateLists and tables for structured data
🤔
Concept: HTML provides tags to organize data into lists and tables for clarity.
Ordered lists (
    ) and unordered lists (
      ) group items with
    • tags. Tables use , (rows),
      (headers), and (cells) to display data in rows and columns.
      Result
      Information is presented clearly, making it easier to read and compare.
      Using lists and tables properly helps users and devices understand data relationships.
      6
      AdvancedHTML forms for user input
      🤔Before reading on: do you think forms send data automatically or need extra code? Commit to your answer.
      Concept: Forms collect user input and send it to servers for processing.
      The
      tag wraps input elements like ,