Find the symbol with the green flag (think of how green traffic lights mean go) under the Control category, and drag it to the center panel (note: in Scratch 2.0 this block has been moved to the Events category).Ĭomments on the shape, such as its size, or whether it went off the page It's a little bit like when you run a race and someone says, "1, 2, 3.go!" You need to tell Kitty when to go.
The first thing Kitty needs to learn is when to start drawing.
If you want to change the way Kitty looks before you start, read the Variations section, below the Experimental Procedure, to find out how. Meow! It's time to program Kitty so that she can draw shapes. When you first start up Scratch, you'll see your artist cat come up on the screen. If this is your first time using Scratch or if you need a refresher, read the Science Buddies Scratch User Guide. This short guide will familiarize you with Scratch. If you need help installing it, read the Science Buddies Installing and Getting Started with Scratch page. To start this science fair project, you should go to the Scratch download page at the MIT Scratch 1.4 website and have an adult help you follow the instructions there to download and install Scratch for free. Installing and Getting Started with Scratch Information about the most recent version of Scratch is available at the MIT Scratch website. The project can be modified to work with other versions of Scratch. This project idea was written using Scratch version 1.4, which is available at the Scratch 1.4 download page.Ī Science Buddies tutorial for Scratch 1.4 is available on ourĪnd additional tutorials are available on the download page. Why do cartoon characters on a computer need a computer program?. If you wanted to draw a big shape in the sand or in the snow with your feet, how would you move your body to do it?. What does a protractor help you measure?. What does an artist do first when he or she wants to draw something?. The computer program will tell her how to move so that she can draw her first shapes and get her start becoming a great artist! Terms and Concepts 
You'll help her by writing a simple computer program-a set of instructions for the computer. She doesn't even know how to draw shapes, like a triangle, yet. The kitty is a cartoon character who is just a beginning artist. In this computer science project, you are going to teach a kitty how to draw. Then you have to turn 120 degrees again, so that you can come back to Point A. To draw a triangle, you start at Point A, travel to Point B, and then have to turn very far-120 degrees-so that you can continue on the path to Point C. Now suppose your friend tells you that she wants to learn how to draw a triangle, so you show her that path, too.
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