1. Structured Problem Solving The SmallTalk Environment

2. Starting a New Worskspace This window appears Type in Session1 New Drag the cursor over the text, and right-click. Select Do it

3. Summary: The SmallTalk Workspace Starting a New workspace: Select File – New Workspace Adding Text: Type in, it is a text editor. Saving:Select File – Save Opening:Select File – Open Executing: Select the Text, right click, Do it

4. The PieEater Grids

5. Messages

6. A New Object

7. Longer Programs

8. Repeating…

9. Attributes Names for Attributes will: Begin with a lower case letter Contain no spaces e.g. customerName numberOfRecords colour

10. Names for Protocols Names for Protocols will: Begin with a lower case letter Contain no spaces e.g. reserveVideo turnRight red

11. Messages 1 Each message which sets an attribute value has the structure: attribute:value For example to set a customer name we would send the message: customerName: Tony The message to an object called customer would be: customer customerName: Tony

12. Messages 2 Each message which requests an attribute value as a reply should be given the same name as the attribute name. for example: customerName is the message which requests the value of an object’s customerName