Press the green flag to start. Click on the settings to change certain features. Click on either CVC Dibel Practice or 0-10 Adding practice to start. Dibels: Three-letter, consonant-vowel-consonant, (nonsense) words will appear on the screen. You can make them capitalized and have complex endings in the settings. Addition/Subtraction: An addition or subtraction equation will appear with the numbers varying from 0 - 10. If a student is correct, press "Y." If they are incorrect, press "X." If you want to go to the next Dibel or equation, press the spacebar.