• Support the Moscow Mechanics
  • About Us
    • Contact Us
      • Volunteer & Internship Opportunities
    • Our Vision
    • The HIS Board
    • Community Educational Partners
    • Corporate & Foundation Support
  • STEM Resources
    • Your State/Province
      • United States
    • Resource Reviews
    • Elementary
      • Elementary Science
      • Elementary Technology
      • Elementary Engineering
      • Elementary Math
    • Secondary
      • Secondary Science
      • Secondary Technology
      • Secondary Engineering
      • Secondary Math
    • 4-H STEM/Science Curriculum
    • Conference Excerpts
  • FIRST Robotics
  • Creation Resources

Homeschool Institute of Science

Just another WordPress site

November 25, 2014

Trees are marvelous provision

Thoughts on our Fall Science and Service Day

Maple, elm, sycamore, and oak leaves filled the bags. Little hands and big hands raked, piled, tossed, and disappeared into the mostly dry and brown sun-catching devices. By mid-November most of the pigments in these exotic broad leaves (there are few native hardwoods in the Palouse/Northern Rockies region) had broken down. The leaves were now shells of their former selves. The chlorophyll had given way to the carotenoids – the reds (anthocyanins) and yellows (xanthophyll). They in turn yielded to the tree’s determination that it was now time to completely sever the connection between twig and stem, returning every bit of available nitrogen back to its core, to serve as critical nourishment and antifreeze for the winter.

Some reds still remained in the occasional mountain ash, yellow in an aspen or cottonwood scattered around town. They stood out with brilliance on this last of the sunny days of a relatively mild autumn.

Trees are marvelous provision. On this day alone they provided us with work, an activity to undertake with friends new and old, apples for cider, and material for discovering more about pigments and how they work. Using paper chromatography we were able to get a snapshot into the various pigments present in different leaves. We learned that different pigments have different molecular weights, allowing the wicking alcohol to separate and deposit the lines of color on strips of coffee filter varied distances from the edge. Download this activity and try it at home (brighter colors work best). 

Fall Leaves Paper Chromatography

One young homeschooling father piled leaves into a bag with his two and three year old sons. Upon leaving he commented something to the effect of “many hands actually get quite a bit done, far more than I expected. This was awesome. I learned a lot.” He wasn’t referring to raking, which he has most certainly been doing for over twenty years. And he wasn’t referring to the chromatography which was yet to come. I think he learned much, much more.

 

 

Share this:

  • Click to share on Facebook (Opens in new window)

Related

Article by William Boyd / community, Ecology, Natural History, Outdoors

This Morning in Creation

A short, periodic audio exploration of the richness of Creation, usually just a few blocks or miles from the … Continue Reading

Recent Posts

  • Current Projects
  • Blessing of the Dolphins
  • Iconography and the Woke Multiverse
  • This Morning in Creation
  • Design in the Science Classroom

Instagram

We've noticed what seems to be an early emergence of a variety of insects this spring including butterflies, assorted beetles, and even dragonflies. Hotter than normal early May temps brought early and short lived blooms as well. #butterfly
Coluber constrictor mormon; western yellow-bellied racer. #herpetology #snake #coluberconstrictor
Yellow-bellied (western) racer, Kendrick, Idaho. Caught by Dave Hartley.
Great season Moscow Rugby Club! #moscowrugby
You hardworking parents out there have been asking for it, so here it is, a camp for you! Birding 101 with your truly June 19-21. Fifteen hours of field time in diverse Palouse habitats! Message me for registration info!
Good time with the whole family and Uncle Jimmy, who received his first ever rickroll. 😀

PO Box 8605
Moscow, ID 83843
(208) 301-4737

The Homeschool Institute of Science, Inc. is a registered 501 (c)(3) non-profit organization. All donations are tax deductible.

Copyright © 2023 · Homeschool Institute of Science on Genesis Framework · WordPress · Log in

 

Loading Comments...
 

You must be logged in to post a comment.