Tuesday, April 13, 2010

Activity: Growing Potatoes and Carrot Tops

Capture the interest and imagination of students by growing carrot tops and potatoes.


Materials
  • Toothpicks
  • Glass or plastic cup or saucer
  • Water
  • Sweet Potato or Carrot
  • Knife
  • Scissors
  • Pebbles or pea gravel
Carrots
  • Select a fresh carrot that still has the leaves on the top.
  • Cut the carrot so that about two inches remain below the top. 
  • Trim the leafy greens from the top of the carrot.
  • Fill a container with about one inch of pebbles or pea gravel.
  • Place the carrot tops, cut side down, in the gravel.  If necessary, add more gravel to hold the carrot tops in place.
  • Add water to the container.
  • Place the container in a sunny location.
  • Ask students to predict what will happen. 
    • Will a new carrot form? 
    • Will it grow? 
    • If so, how big will it get?
  • Observe the changes in your carrot.
  • Add water as necessary.
  • Although the carrot will not form a new root, after a few days leafy greens will start to appear.
Potato
  • Place four toothpicks around the middle of a potato.
  • Fill a cup with water.
  • Taking the potato with the toothpicks, rest the toothpicks on the edge of the cup.  The bottom of the potato should be sitting in the water.
  • Place the cup in a sunny location.
  • Ask students to predict what will happen. 
    • Will a new potato form? 
    • Will it grow?
    • If so, how big will it get?
  • Observe the changes in the potato.
  • Add water as necessary so that the bottom of the potato is in the water.
  • After a couple of days, roots will start to form in the water and stems and leaves will start to form.

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