Ingredients 1 cup baking soda ½ cup warm water 1 tablespoon table salt (enhances crystal growth) Liquid food coloring Green for the tree Optional: brown for the trunk Materials 1 sheet paper towel Small plate or shallow dish Small cup or bowl Instructions 1. Make the Tree Shape Fold the paper towel in half lengthwise. Cut out a simple tree or Y-shape. Gently stand it upright so both bottom ends touch the plate. 2. Mix the Crystal Solution In a small cup, combine: ½ cup warm water 1 cup baking so