Please wait for the applet to load some images. The box above will turn yellow when it's finished.
You can practice single clicking and double clicking the left or right button on your mouse.
When you single click or hold down the button on your mouse, the same button will light up on the screen.
If you double click a button, it will light up with a picture of a butterfly. To double click, lightly press the button twice quickly.
You can practice moving your mouse, by moving it inside and outside the applet to have the picture of the mouse appear or disappear.
NOTE: Java has no way of detecting both buttons being down.
Click on the red box and hold down the mouse button. Now drag the mouse in any direction. You will see that the box will move with you. When you release the mouse button, the box is where you left it. If you need to reset the box, click the applet and then press the R key on your keyboard.