The NumberVerse cast
Each friend shows you one idea by how they act. Meet them all and see how the ideas fit together.
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Tenfold Place value — powers of 10, positional notation -
Zeph The zero placeholder — its load-bearing role in positional notation -
Mirror Negative numbers — reflection across zero on the number line -
Skip Skip-counting and multiples — repeated addition as forward stepping -
Tug Inverse operations — addition ↔ subtraction (and the same idea for × ↔ ÷) as opposite pulls on the same line -
Nigh Rounding and estimation (judging a number by the nearest landmark) -
Rive Factors, divisors, and prime numbers (splitting a number into what divides it) -
Vie Comparing and ordering (magnitude — greater-than and less-than) -
Weld Number bonds (part-part-whole decomposition; making ten) -
Yoke Parity (even and odd numbers)