Chances are the Apple logo you recreated on the Logo Recreation assignment is probably pretty "rough" looking. Much of this is due to a lack of experience with the Pen Tool. But, it also has to do with a lack of familiarity with certain procedures. In this instance, re-illustrating all the little nuances of the apple logo and maintaining it's smooth character is a challenge when you have things separated into different segments. In this lesson, you will learn and understand Adobe Illustrator's Clipping Mask function, and how it defines the idea of "Sum of all parts."

1. Create a new folder in your Multimedia folder and title it “Apple Logo - Clipping Mask”
2. Open your Logo Recreation assignment that you created prior
3. Create the outline of the apple, using only a stroke
   
4. Move the outline over to the left (onto the gray area – the “Paste Board”
   
5. Create a rectangle to the left of the apple logo and color it green (using the eye dropper tool). Make sure the box is actually wider than the actual apple logo itself. 
   
6. While the green box is selected, copy the item by selecting “Edit” (from the Menu bar) and then select “Copy”
7. Press “Ctrl” and the “F” key at the same time five times. This will paste the green box five more times, one on top of the other. Only one box is displayed because they are stacked directly on top of each other.
8. Click on the arrow directly left of the “Preview” box on the Layers panel. This will “expand” the “sub layers” within the “Apple Logo” layer.
   
9. Click on the last box that you pasted and drag it so that it aligns with the blue portion of the Apple logo. You can tell which item is selected because of which “radio button” is selected in the sub-layers list.
   
10. On the sub layers list, hold “Shift” and select all radio buttons for each green box sub-layer.
    
11. Open the “Align” panel under “Window” on the menu bar. We need to select the “Vertical Distribute Center” option. This will spread the boxes out evenly.
    
12. We need to color each box the same as the colored sections of the Apple Logo. Use the eyedropper to do this.
    
13. Your layers panel should look like this:
    
14. We need to relocate the apple shape to the top of the layer stack. Grab the apple sub layer and drag it to the top. Your layer/sub-layer stack should now look like this:
    
15. Select the apple outline and position it so that it rests on top of the colored boxes
    
16. Select the Apple outline and the colored boxes sub-layers by holding “Shift” and then selecting their radio buttons.
17. The Apple should appear as so:
    
18. Now, on the Menu bar, select “Object” then select “Clipping Mask” and then “Make.”
19. This is how it should now appear:
    
20. Finish the apple by using the pen tool to recreate the leaf.
21. Now, select the whole apple and then go to “Edit” and then “Copy.”
22. Create a new Illustrator document and make sure that it is set at:
    
23. Paste the apple into the new document
24. Stretch the apple logo out so that it fits nicely into the document’s “Art Board”
25. This is how your apple should now appear: the finished product.
    
26. Save your document into the “Apple Logo - Clipping Mask” folder as "Apple Logo CM.pdf"

STEL 2 Core Concepts of Technology and Engineering

2Y: Implement quality control as a planned process to ensure that a product, service, or system meets established criteria

STEL 7 Design in Technology and Engineering Education

7H Illustrate that there are multiple approaches to design

7I: Apply the technology and engineering design process

7O: Apply tools, techniques, and materials in a safe manner as part of the design process

7R: Refine design solutions to address criteria and constraints

7V: Improve essential skills necessary to successfully design.

7Y: Optimize a design by addressing desired qualities within the criteria and constraints

STEL 8: Applying, Maintaining, and Assessing Technological Products and Systems

8J: Use devices to control technological systems