Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to make static electricity [title] Tie a piece of sugarless puffed cereal to the end of a thread. [step] You can actually test how well certain objects develop electrical charges (static) by making a homemade electroscope. To make a simple electroscope, tie a piece of puffed sugarless cereal to a thread and hang the thread off something such as a table or paper towel rack.

Ending1: You can also weigh it down with wax paper or newspaper and place the assembly of the projector after weighing it down. [title] Make a portable overhead projector by floating small magnets around the room. Ending2: Have a friend or family member stand still while you draw the circumference of the device. Then, mark the desired conductivity on the material. Ending3: It's okay if it isn't the best handheld method. [substeps] You can find a bunch of supermarkets that run electricity primarily through electrotargeted pipes. Ending4: [title] Rub a comb or inflated balloon (not helium) with a piece of wool. [step] Plastic combs and wool are two of the more common household objects that hold a great static charge.

Answer format: ending1/ending2/ending3/ending4