Friday, October 25, 2019

Fermentation Studies in Science Club

Now we go deeper into the wonderful wide world of Microbiology!

I brought in some Special Guests to help me incorporate some exploration of fermented foods, and some new hands-on projects, for this topic. Thank you to Ms. Jamie and Ms. Shelby for generously sharing your time, your energy, and your starter cultures!

Friday, October 18


  • start gelatin plates (distilled water, unflavored gelatin, sugar, salt)


  • put together the Waseca Biomes Tree of Life, look at fact file cards
  • review Linnaean system of classification (Kings Play Chess on Fine Grains of Sand) and scientific names
  • look at eight samples of yogurt and find Live Active Cultures in the ingredients list

      Stonyfield Organic Probiotic Whole Milk - Plain

      Oui - Peach

      Chobani Greek Yogurt Blended - Pumpkin & Spice

      Chobani Non-Dairy Coconut Based - Strawberry

      Icelandic Provisions Traditional Skyr - Peach Cloudberry

      Siggi's 0% Milkfat - Mixed Berries & Acai

      Noosa - Blueberry

      Libre Whole Milk Yogurt - Ecuadorian Mango

  • presentation from Kombucha Special Guest (Ms. Jamie) with background on fermentation in general and kombucha in particular
  • start batch of kombucha (1 gallon water, 1/4 cup loose leaf jasmine tea, 1 1/2 cups sugar, SCOBY), taste sweetness of initial water/tea/sugar blend, sample and taste tartness and carbonation in some finished batches (Peach Jasmine and Strawberry Jasmine)

    Kombucha Crafter's Logbook

    my special journal for keeping track of our notes!
  • swab eight places in the house and add to prepared gelatin plates

Friday, October 25

  • review Tree of Life, scientific names & kombucha from last week
  • explain Kings Play Chess on Fine Grains of Sand for human beings (Kingdom Animal, Phylum Chordates, Class Mammals, Order Apes, Family Hominids, Genus Homo, Species sapiens)
  • look at and sketch results of gelatin plate experiments
  • presentation from Sourdough Special Guest (Ms. Shelby) about this early method of baking bread which dates way back to Ancient Egypt
  • look at and smell sourdough starter, learn about it as an ecosystem with fungus and bacteria, learn about how to make a starter (1/2 cup whole wheat flour, 1/4 cup warm water, wild yeast which is in the air) and its feeding schedule (like taking care of a pet... or a really needy houseplant), answer student questions, begin our own starter (which we have named "Newt" and designated our Science Club mascot)
  • taste the still-warm crusty sourdough loaf of bread she made for us!

    Starter Sourdough

    the book we have of instructions & recipes

    Artisan Sourdough Made Simple

    the book Ms. Shelby uses for her recipes

  • art project for asexual reproduction (paint, folded piece of paper)
  • discuss evolution and the theory of natural selection
  • how long ago did life on our planet begin in order for us to have the massive variety of living things that we have on Earth today?
  • introduce 2020 Timeline of Life calendar project for parent gifts

  • Create Your Own Calendar 8" x 8"

This post contains affiliate links to materials I truly use for homeschooling. Qualifying purchases provide me with revenue. Thank you for your support!

No comments: