The course

Every lesson on one map

Start anywhere. The order is a suggestion, and every lesson opens on its own. Finished lessons get a check mark.

  1. Track 1 How plants really grow

    1. What a plant actually needsLesson 1. You are here.
    2. What soil does, and what it does not doLesson 2. Coming up.
    3. Roots: drinking, eating, breathingLesson 3. Coming up.
    4. Plant food: the nutrients and what each one is forLesson 4. Coming up.
    5. Light and why it mattersLesson 5. Coming up.
    6. Water as a delivery systemLesson 6. Coming up.
  2. Track 2 Hydroponics

    1. Growing without soilLesson 7. Coming up.
    2. Six ways to do itLesson 8. Coming up.
    3. The nutrient solutionLesson 9. Coming up.
    4. pH: the nutrient lockLesson 10. Coming up.
    5. Nutrient strength: the soup testLesson 11. Coming up.
    6. Oxygen at the rootsLesson 12. Coming up.
    7. What plants stand in: growing mediaLesson 13. Coming up.
    8. When things go wrong: reading a sick plantLesson 14. Coming up.
    9. Project: grow lettuce in a jarLesson 15. Coming up.
  3. Track 3 Aquaponics

    1. Fish and plants as partnersLesson 16. Coming up.
    2. The bacteria you cannot seeLesson 17. Coming up.
    3. The nitrogen cycle, step by stepLesson 18. Coming up.
    4. Starting a system: why you wait before adding fishLesson 19. Coming up.
    5. Choosing fish and plants that get alongLesson 20. Coming up.
    6. Keeping the balance: feeding, pH, temperatureLesson 21. Coming up.
    7. When things go wrong: fish, plants, or bacteria?Lesson 22. Coming up.
    8. Project: design a small aquaponics system on paperLesson 23. Coming up.
  4. Track 4 Feeding the future

    1. Water, land, and why growing methods matterLesson 24. Coming up.
    2. Farms in cities, deserts, and spaceLesson 25. Coming up.
    3. Jobs in growing: who works in this fieldLesson 26. Coming up.

clears the lessons marked done on this device.