into a quarter. this is where you will be using the tape and two sets of coins. before you begin, make sure the quarter is already taped in your hand so you can make the switch later on.
you then ask the person for a dime. once it is given, you hold on to this tightly in between the thumb and index finger of your right hand so you will be able to slide the quarter into position behind the dime.
use your left hand to press the dime onto the tape covered side of the quarter and use your fingers to squeeze these two together.
then it is time to take the 