¡Feliz año nuevo! ¿Cómo fue su celebración?
To celebrate my new science teaching jobs that I mentioned on Twitter, I'm looking around for fun soil science ideas that address our Texas HS Science learning objectives, TEKS. I found instructions for making a root viewing box where you can make lots of fun experiments. I hope I can muster up the motor skills to make one. Hammer, please avoid my fingers. Thank you. I found instructions here (horizontally oriented) and here (vertically oriented). Mickey over at My Wisconsin Garden made a pretty one with cedar with some nice germination results.
|Vertically oriented root viewing box by the NRCS|
- positive geotropism (grow towards the source of gravity), and
- negative light tropism (grow away form the source of light), and
- negative thigmatropism (growing away from obstacles touching them) (activity details for all here)
- see how the roots respond to different soil textures (sand, silt, and clay), and
- varying soil moisture at depth (water it for longer or shorter time periods)
- compare the root lengths of different plants, like native Texan prairie grass to conventional lawn grasses, and then
- think about what that means for facilitating erosion (Native is better! But find out for yourself).
- do so many things! Heh, you though you were getting more, eh?
Tropism: A response to stimuli by plants is called a tropism (source).