Create your own centimeter ruler. Then, estimate and measure with lengths with it. Warm up with a Mystery Math Mistake as you add two 2-digit numbers using a decomposition strategy. Think through ...

If you've ever found yourself wanting to measure something but don't have a ruler or tape measure on hand, measuring apps on your phone can come to the rescue. They range from the fairly simple to ...

Phase estimation, at the heart of many quantum metrology and communication schemes, can be strongly affected by noise, whose amplitude may not be known, or might be subject to drift. Here we ...