Scroll from the entire universe, down to the Solar System, a human, and then even smaller, down to sub atomic particles. It’s a great way to visualise aspects of scale.You can see it here.
This reminds me of a similar resource that I blogged about last year, the Cell Size and Scale interactive from the Genetic Science Learning Centre, University of Utah, takes you from a coffee bean down to a carbon atom.
Both are great visual tools for Science and Maths teachers. Thanks again to Drew for sharing!