Gemma shook her head up and down as she wrote all of the different types of currency from around the world on the board. When the answers started dwinddling out, she stepped back and glanced at the list. "Brilliant." she said and then turned back to the students after flipping the board over again and erasing it.

"That is a great list of currency...now those are types of currency currently used. Through the years, money and currency has changed immensely and money wasn't always the type of money used in sales and bartering. In some coastal communities, they used shells and pearls as a form of currency. " she paused and let that sink in..then she continued, "What other items do you think they used to use instead of money to pay for stuff?" she said with a smile.