Suppose you look up an index of the lengths of the world’s rivers. What digit do the lengths start with? Are there the same number of rivers whose length starts with a 1 as there are rivers whose length starts with a 2?

The digits of random data reveal to some very surprising patterns. So find your favorite data set and then check out our worksheets!

Handout 1 Worksheet to explore the first digits of your numbers Handout 2 Counting numbers up to a power of ten Handout 3 Exploring why you see what you do