Adam
Morgan had an idea. The kind of dumb, poorly thought out idea that teenagers like her had on the regular. And with no adults in sight to stop her, she'd collected everything she needed, and was now standing out on the grounds, looking for a partner in crime. Anyone would do, anyone not a teacher. 

And then she spotted someone walking along. The blue haired girl waved her hand at the unsuspecting stranger excitedly, and shouted "HEEEEY! HEY! COME OVER HERE!"
Robert
And she chose Violetta. Which for Morgan's information, is probably the worst candidate for mischief ever. Aside from her whole 'i can only talk to people i have psycho analysed in my little journal' thing, she wasn't that keen on trouble or stupid plans.

The short girl was just on another daily stroll, another stroll like no other, except this time she's been interrupted by an unfamiliar force.
Like an actually unfamiliar force- as in someone she hadn't really been aware of until now. Grand.

Violetta turned on her heel slowly, blinking at Morgan stoically. Giving herself a moment to think, she left the bluenette in a wave of awkward silence.

And with that awkward silence, she simply strolled over to Morgan with nonchalance.
A really, really fake nonchalance.
Adam
"Hey!" Morgan could tell Violetta was a bit put off by the spontaneous call out. Morgan probably would've been too in her place. But at the moment, she was too stoked about her new experiment to care. 

The grassy area where Morgan was standing was littered with... Garbage can lids... Three or four metal disks, likely taken from spots around campus, were just lying around. 

Morgan, too excited to even introduce herself properly, immediately got to the point. "Okay, so I'm trying an experiment with my powers to see how strong of a magnetic field I can generate around myself, and I need someone to help me." She picked up one of the metal lids. It had a bit of a dent on the side, but was surprisingly clean and taken care of. "I need someone to throw this at me, so I can see if I can deflect it with a magnetic field." She pointed at her backpack lying in the grass a few feet away. "I brought snacks as a bribe. They're yours if you agree to help me out for a few minutes. Deal?" Morgan talked so fast, the explanation of her plan took all of thirty seconds. Clearly, she's been dying to try this out for a while.
Robert
Violetta didn't speak a word, not when she approached, and not when Morgan when explained her plan. One could mistake such silence as cool reserve, but the shaky feeling in the pit of Violetta's stomach said otherwise.
The litter distressed her as she looked around subtly- until the plan was explained, and she was no longer fearing for the Newton's Cradle Climate.

Violetta mulled it over in her head, it was quite simple, and she wasn't sure why she needed to give it so much thought, but she was just that kind of person, i suppose.

And finally, after a completely silent interaction with Morgan so far, the short girl finally responds.
"...What kind of snacks?"
Adam
Morgan waited with baited breath for Violetta's response. She perked up when she finally asked her question. "Uh, lemme see." Morgan walked over to her backpack and squatted down. She rummaged around, calling out what she found. "I have two mini-packs of mnms, an orange, a bottle of apple juice that's two weeks old, and- oh yeah!" She pulls out a ziplock bag full of what looks to be cookies. "I made chocolate chip cookies cause I was helping my brother figure out the recipe. I forgot those were in here. Think I left em in the oven a bit too long but they should still be good." They looked a little brown and hard, but they weren't totally burnt. "You can take your pick of whatever."