aidemia--modules-lessonplan_request	Titles of parts of the lesson must be formatted as headings
What to create	Lesson script
Which subject	Business
What topic	Objects, Active Content and Languages as well as Objects and Security Issues
What length (min)	30
What age group	Year or Grade 10
Include homework
Include images descriptions
Any other preferences	take information from the CIW Internet Business Associate curriculum

Business Lesson: Objects, Active Content, and Languages; Objects and Security Issues

Lesson Duration: 30 Minutes

Learning Objectives

By the end of this lesson, students will be able to:

1. Explain what objects are in the context of the web.
2. Describe what active content is and its various types.
3. Understand the programming languages used for web development.
4. Identify potential security issues related to web objects and active content.

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Introduction to Objects on the Web (5 minutes)

Objects are fundamental components of web applications. In simple terms, an object can be anything that has a defined structure or behavior. Objects in the web context can include:

• Images: Graphics and visual assets used in web pages.
• Scripts: Pieces of code that enhance interactivity or automate tasks on a website.
• Documents: Files that can be linked or embedded within web pages.

Example

Consider an online shopping site where the product images, descriptions, and payment options are all considered objects that interact with each other, creating a dynamic user experience.

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Active Content and Its Types (10 minutes)

Active content refers to items within web pages that can change dynamically in response to user actions or other inputs. Various types of active content include:

1. JavaScript: A popular programming language used to create rich web interfaces. It allows developers to implement complex features such as drag-and-drop functionality and interactive forms.

2. Java: A programming language that can be used to create applications that run in web browsers through Java applets.

3. Flash: Though largely obsolete now, Flash used to allow animation and games on the web. It has been replaced by HTML5.

4. ActiveX: A Microsoft framework for embedding content into web pages—mostly used in enterprise applications.

Importance of Active Content

Active content enables websites to provide a more engaging user experience, allowing for real-time updates and interactions. For example, when users add an item to their shopping cart, JavaScript handles the update instantly without requiring a page refresh.

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Programming Languages for Web Development (5 minutes)

Various programming languages assist in creating web content. The two primary categories include:

• Front-end Languages: These include HTML, CSS, and JavaScript, enabling the design and layout users see directly in their browsers.

• Back-end Languages: These include languages like PHP, Python, Ruby, and Java. They handle server-side processing, database interactions, and business logic.

Language Comparison

Language	Purpose	Example Use Case
HTML	Structure of web pages	Creating the skeleton of a webpage
CSS	Styling web pages	Making a website visually appealing
JavaScript	Interactivity	Form validation and animations
PHP	Server-side processing	Managing user sessions and databases

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Security Issues Related to Objects and Active Content (10 minutes)

While objects and active content enhance web functionality, they also introduce security risks. Some common security issues include:

1. Cross-Site Scripting (XSS): A vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users. Using input validation and sanitization techniques can help prevent this.

2. Cross-Site Request Forgery (CSRF): A malicious exploit of a website whereby unauthorized commands are transmitted from a user that the website trusts. Implementing anti-CSRF tokens in forms is a defense strategy.

3. Malicious Active Content: This includes harmful scripts embedded in web pages that can lead to data breaches or unauthorized access. Disabling active content from unknown sources can reduce risks.

Best Practices for Security

• Keep Software Updated: Regularly update scripts and libraries to patch vulnerabilities.
• Authorize Users: Use authentication protocols to ensure that users have the correct permissions before accessing sensitive areas of the site.

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Conclusion (2 minutes)

In today's lesson, we discussed the importance of objects in web development, the various types of active content, the programming languages commonly used, and the security issues linked to them. As businesses move online, understanding these elements is vital for creating both effective and secure web applications.

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Homework Assignment

Tasks:

1. Define the following terms:

   • Object
   • Active Content
   • XSS

2. List two examples of programming languages used in web development, specifying their primary use.

3. Explain one security risk associated with active content and how it can be mitigated.

Answers:

1. • Object: A structured element on a web page such as an image or script.
   • Active Content: Dynamically changing components of a web page that respond to user actions.
   • XSS (Cross-Site Scripting): A security vulnerability that allows attackers to inject malicious scripts into webpages viewed by others.
2. • JavaScript: Used for creating interactivity on web pages.
   • PHP: Used for server-side processing in web applications.
3. • One security risk is Cross-Site Scripting (XSS). It can be mitigated by implementing input validation and sanitization measures on forms and user inputs.

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Thank you for your attention! Be prepared to discuss your homework in our next class.