Skill building in science is just as important as it is in math. Building a common language amongst young scientists helps them understand how the real world scientific community works. I finally have posted my skill building cards for graduated cylinders, if you want to take a look at what I use in my classroom. While building the understanding of how to read a graduated cylinder, I'm also teaching other skills like interval, scale, unknown numbers and metric.
As for my genetics download...I'm still working on perfecting it. All in good time!