-------------------------------------------------------------
All that is needed to start the lab is to press the 'a' key. You will then be prompted to input a number. For best results, press the 'Enter' key, because clicking the check mark will also ckick the sprite behind it. next, choose the operator you wish to use(all of them work), and input your second number. lastly, CLICK the '=' button for the result.
Here is a link to my project on scratch: blah
-------------------------------------------------------------