We made some posters for the HS students math classroom. Talking with the HS math teacher we both agreed that kids have a hard time understanding the orders of magnitude. I took on the project in my class to give my kids a better understand of the individual units of measurement, and they made a visual poster to share with the older kids. They did some great work, and I think it helped them understand the idea of why there are different orders of magnitude, and the need to measure different things with different units. One student commented that measuring the length of an ant and the distance between Pluto and the Earth with the same unit would be, in her words, a waste of time.