There's a reason for that small gap before the zero on a ruler. But have you been accounting for it in your measurements?

Scientists found themselves working from home along with most everyone else when universities shut down in the face of the COVID-19 pandemic—including laboratories, posing a unique challenge for ...

Measure length using a ruler marked with halves and quarters of an inch with Ms. Askew. Join Ms. Askew for a fun Fraction Number Talk. We'll measure length using a ruler marked with halves and ...