Zack gathered the things he needed for his and Griffin's presentation. He hoped his brother wouldn't change his mind. Griffin still wasn't sure that this was the best idea. But so many students were participating that Zack had been able to use the competition aspect to convince him to participate. 
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Katherin didn't need anything but her CD. She knew exactly what she was going to do. She hoped everyone was ready. She couldn't wait to see what everyone was doing. She was excited to see so many people participating.