Calling your mechanic to see if your car is fixed yet

• Fixed Interval

• Fixed Ratio

• Variable Interval

• Variable Ratio

Elementary students getting to go out for recess at the same time every day

• Fixed Interval

• Fixed Ratio

• Variable Interval

• Variable Ratio

Getting a $.50 raise on your hourly raise each year

• Fixed Interval

• Fixed Ratio

• Variable Interval

• Variable Ratio

You get a free flight after a specific number of miles flown

• Fixed Interval

• Fixed Ratio

• Variable Interval

• Variable Ratio

Studying for a class that has pop quizzes

• Fixed Interval

• Fixed Ratio

• Variable Interval

• Variable Ratio

A child wants to go fishing so they looks under rocks for worms

• Fixed Interval

• Fixed Ratio

• Variable Interval

• Variable Ratio

Paid $10 for every 20 party subs made

• Fixed Interval

• Fixed Ratio

• Variable Interval

• Variable Ratio

Feeding your new fish when you get home from school at 4pm every day

• Fixed Interval

• Fixed Ratio

• Variable Interval

• Variable Ratio

Getting a paycheck at the end of 2 weeks

• Fixed Interval

• Fixed Ratio

• Variable Interval

• Variable Ratio

Sometimes the mail is delivered at 1pm; sometimes it's closer to 2pm

• Fixed Interval

• Fixed Ratio

• Variable Interval

• Variable Ratio