The mod 5 clock allows you to determine the remainder if you divide a given number by 5.
Click the button "New problem" to create a new problem.
Drag the slider or type a number in the box "Check your answer!" in order to move the hand of the mod 5 clock. When the value of the slider or a number in the box "Check your answer!" matches the given number, the hand of the clock points at the corresponding remainder for division by 5.