Computer Science
Grade 8
20 min
GitHub Basics
GitHub Basics
Tutorial Preview
1
Introduction & Learning Objectives
Learning Objectives
Define 'version control' and explain its importance using an analogy.
Differentiate between a local repository on their computer and a remote repository on GitHub.
Explain the purpose of a 'commit' as a snapshot of their project at a specific time.
By the end of of this lesson, students will be able to describe the function of a 'repository' as a project's main folder.
Understand the basic 'commit' workflow: modify files, stage changes, and commit them with a message.
Explain the concept of a 'branch' for working on new features without changing the main project.
Ever worked on a group project and someone accidentally deleted all your work? 😱 What if you could travel back in time to get it back?
In...
2
Key Concepts & Vocabulary
TermDefinitionExample
Version Control System (VCS)A tool that tracks and manages changes to files over time. It's like a 'save' button with a memory, letting you go back to previous versions of your work.Imagine you're writing a story. A VCS lets you save 'Chapter 1 Draft 1', 'Chapter 1 Draft 2', etc., and you can always look back at Draft 1 if you don't like your new changes.
Repository (Repo)A folder for your project that contains all the project files and the entire history of changes.If you're building a website, your repository would hold all your HTML, CSS, and image files, plus a hidden log of every change you've ever made.
CommitA snapshot of your files at a specific point in time. Each commit has a unique ID and a message des...
3
Core Syntax & Patterns
The Basic Commit Cycle
Modify -> Stage -> Commit
This is the fundamental three-step process for saving changes. First, you *modify* your files. Then, you *stage* the specific changes you want to save. Finally, you *commit* those staged changes with a descriptive message, creating a new snapshot in your project's history.
The Commit Message Convention
Use a short, present-tense verb to describe the change.
Write commit messages as if you are giving a command. This standard format makes the project history easy to read. For example, use 'Add user login feature' instead of 'I added the user login feature' or 'Added feature'.
Local vs. Remote Synchronization
Pull -> Work -> Push
When collaborating, always 'pull' th...
5 more steps in this tutorial
Sign up free to access the complete tutorial with worked examples and practice.
Sign Up Free to ContinueSample Practice Questions
Challenging
A student is coding a game. They make these commits in order: 1. 'Create player sprite', 2. 'Add player jump ability', 3. 'Add enemy AI'. After testing, they find that commit #2 introduced a major bug. What key advantage of using a Version Control System is most useful here?
A.It allows you to share the code with friends to help find the bug
B.It provides a history of snapshots, allowing you to go back to the working version before the bug was introduced
C.It automatically creates a backup of the project on a remote server like GitHub
D.It forces you to write good commit messages, which explains where the bug is
Challenging
A project has a `main` branch that is stable. A developer creates a new branch called `new-feature`. On this `new-feature` branch, they add a new file `login.html` (commit 1) and then a new file `login.css` (commit 2). At this point, what is the state of the `main` branch?
A.The `main` branch now automatically contains `login.html` and `login.css`
B.The `main` branch contains `login.html` but not `login.css`
C.The `main` branch is unchanged and does not contain either of the new files or commits
D.The `main` branch is deleted and replaced by the `new-feature` branch
Challenging
You are assigned a major task: redesign the entire header of your team's website. This will take several days. Based on the tutorial's concepts and pitfalls, what is the best overall workflow?
A.Work directly on the `main` branch and push your changes at the end of each day
B.Create a new branch, make small, logical commits as you work, and only merge it to `main` when the redesign is complete and tested
C.Make all the changes on your local computer without committing, and then make one large commit to the `main` branch when you are finished
D.Email your changed files to your team leader each day so they can add them to the `main` branch
Want to practice and check your answers?
Sign up to access all questions with instant feedback, explanations, and progress tracking.
Start Practicing Free