Mirror
NEGATIVE NUMBERS — reflection across zero on the number line. Negative 3 is the mirror image of positive 3: same distance from zero, opposite direction.
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Mirror grew up in a special town. It was a glass-making town.
The town was called Reflection. It sat right on the kingdom's western coast. Reflection had been famous for its glass for hundreds of years. The sand there was very fine. The potash, which came from seaweed, was very pure. This made the glass truly amazing. Glass blown in Reflection's workshops was the clearest in three whole kingdoms. The town's main export was mirrors. They made small hand-mirrors. They made big parlour-mirrors. Fancy vanity-mirrors, too. Sometimes, a rich noble would order a huge mirror for their house.
Mirror's father ran a big workshop. His name was Verre. It meant "glass" in his family's old language. His workshop was on the harbour side of Reflection. It was one of the biggest. Verre silvered the back of each glass sheet himself. He put fancy walnut frames on the mirrors. Then he them out. Some went by wagon. Others went by boat.
Mirror's real name was Lia. But everyone called her Mirror. They started calling her that when she was eight. She was the second of three children. Lia grew up right in the workshop. There were always so many mirrors there. Twenty to forty finished mirrors leaned against the walls. They waited for their frames. In the right light, the workshop was amazing. It was also a bit much! You saw reflections of reflections of reflections.
The Numberverse ensemble
Mirror is part of Numberverse's distributed-narrative cast. Each character embodies a different curricular primitive; together they teach the full subject.
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Tenfold
Place value — powers of 10, positional notation
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Zeph
The zero placeholder — its load-bearing role in positional notation
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Skip
Skip-counting and multiples — repeated addition as forward stepping
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Tug
Inverse operations — addition ↔ subtraction (and the same idea for × ↔ ÷) as opposite pulls on the same line