AR in the Classroom

1. Introduction

This tutorial is designed to guide you in integrating Augmented Reality (AR) into the classroom. AR provides an interactive experience of a real-world environment, enhanced by computer-generated information. You will learn how to create an AR app using Unity3D and Vuforia SDK.

What you will learn:

• Basics of AR and its applications in education.
• How to create an AR app using Unity3D and Vuforia SDK.

Prerequisites:

• Basic knowledge of programming.
• Familiarity with Unity3D would be helpful but not necessary.

2. Step-by-Step Guide

2.1 Understanding AR

AR overlays digital content on the real world. It allows students to interact with virtual content in a real-world context, enhancing learning experiences.

2.2 Creating an AR App

We will use Unity3D, a game development platform, and Vuforia SDK, which allows AR functionality.

Installation:

• Download and install Unity3D.
• Sign up for a free Vuforia Developer account and download Vuforia SDK.

3. Code Examples

3.1 Setting Up Vuforia in Unity

// This is a C# script in Unity3D
// Import the Vuforia Engine package
using Vuforia;

public class ARScript : MonoBehaviour
{
    // This method will start tracking
    public void Start()
    {
        VuforiaBehaviour.Instance.enabled = true;
    }
}

This script enables the Vuforia engine when your app starts.

3.2 Detecting an Image Target

// This is a C# script in Unity3D
// Import the Vuforia Engine package
using Vuforia;

public class ARScript : MonoBehaviour, ITrackableEventHandler
{
    private TrackableBehaviour mTrackableBehaviour;

    // Initialization
    void Start()
    {
        mTrackableBehaviour = GetComponent<TrackableBehaviour>();
        if (mTrackableBehaviour)
        {
            mTrackableBehaviour.RegisterTrackableEventHandler(this);
        }
    }

    // This method will be triggered when the target is found
    public void OnTrackableStateChanged(
                                        TrackableBehaviour.Status previousStatus,
                                        TrackableBehaviour.Status newStatus)
    {
        if (newStatus == TrackableBehaviour.Status.DETECTED ||
            newStatus == TrackableBehaviour.Status.TRACKED ||
            newStatus == TrackableBehaviour.Status.EXTENDED_TRACKED)
        {
            // Target found
            OnTrackingFound();
        }
    }

    private void OnTrackingFound()
    {
        // React to the target being found, like displaying a message
    }
}

This script detects an image target and triggers an event when the target is found.

4. Summary

You have now learned the basics of AR and how to create an AR app using Unity3D and Vuforia SDK. You can explore creating more interactive and educational AR apps.

Next steps for learning:

• Learn more about Unity3D.
• Explore other AR SDKs like ARCore and ARKit.

Additional resources:

• Vuforia Developer Guide
• Unity3D Tutorials

5. Practice Exercises

Exercise 1: Create an AR app that displays a 3D model of a planet when a specific image target is detected.

Exercise 2: Create an AR app that displays a historical fact when a corresponding image target (like a photo of a historical event) is detected.

Solutions:

1. For displaying a 3D model of a planet, you would need to import a 3D model of a planet into your Unity project. You can then set this model to appear when the image target is detected.

2. For displaying a historical fact, you can use Unity's UI Text to display text when the image target is detected.

Tips for further practice:

• Try using different types of targets, like Multi Targets or Cylinder Targets.
• Experiment with different types of AR experiences, like displaying videos or playing sounds when a target is detected.