Starting up

• Download and install Scratch
• On Lab computers, you cannot install in the regular "Program Files" directory; instead install either on your K: drive, or in C:\Temp
• Files can be downloaded from one of three places: the class network directory on the Q: drive (similar to your K: drive); the Resources section in Sakai; or directly from the Scratch Website at MIT

Tutorial

1. Start Scratch and explore the "Blocks" palate on the left (Motion, Looks, Sound, etc). Click the Help menu and visit the Scratch help page.
2. Open the "Getting Started" guide. Work through the guide, carrying out each of the steps described. Take screenshots after Steps 1, 4, 7, and 8.

Exploring Code: Trampoline

1. Choose File:: Open, then click on "Examples" on the left. Open Animation:: Trampoline, and run by clicking the Green Flag near the upper right. Try clicking each of the arrow keys. What happens for each key? Click the red sign to stop.
2. Look in the "Scripts" pane in the middle. This contains the code that makes things happen. Look for the portion that defines what happen when the left arrow is pressed. Explain what that portion of code means.
3. In that same portion of code ("left arrow"), change the number 12 to a 10. Run by clicking the green flag and explain what happens when you hit the left arrow key.
4. In the bottom right is a pane with "Jodi" and "Trampoline." Click on Trampline, then look at the code in the "Scripts" pane in the middle. Explain what this code does.

Further Exploration

Choose and open THREE additional Scratch examples. Explore each, and answer the following:

1. What does it do? Explain what you see on screen and what the program can do when it is run. How does the user interact with the program? For example, are there keys that cause certain actions?
2. How many "Sprites" are in the program (check the sprite panel at the bottom left).
3. Look through the code for several sprites. On average, how many code block instructions are there (count each "piece" in the Scripts window).

Submission

On Sakai, submit an electronic lab report (.pdf or MS Word .doc or .docx format) that includes the following:

1. A cover page.
2. Answers to the questions above.
3. Screenshots as described above.
4. A brief summary of what you learned.