Use it in full presentation, press > untill your students read the rules and then "start". There are 20 questions using conditionals (that you can edit). Students should answer using a complete sentence, with the 2 parts of the conditional. If the answer is right, press the "right" button; if the answer is wrong, press the "wrong" button.
Points will be added or subtracted according to the result showed.
Then pres > to return to the game board with numbers.