Which of the Following Activities Would Be Most Effective in Helping

Which of the following activities would be most effective in helping science students begin to participate fully in a constructivist environment?

A) Perform a demonstration to show the effect of adding salt and ice to water on the temperature of the water.
B) Have the students pursue a WebQuest on the causes and nature of thunderstorms.
C) Show an Internet video clip on the effect of adding yeast to sugar water and ask the students to summarize the main points in their science journals.
D) Take the class outdoors for a walk around the school and ask them to record their observations and the questions suggested by these observations in their science journals.
E) Any of the above
F) None of the above