1. Cognitive Dev. in Adolescence Des. Cognitiva en la Adolescencia

2. Pendulum Experiment Piaget showed children/adolescents a pendulum.
Asked “What determines the speed”? Heaviness, weight, length of string?”
Concrete operational: random approaches (alter more than 1 variable at a time); cannot explain the correct answer (i.e. – length of string)
Formal operational: will change one variable at a time to get to the right answer; first, tests weight; then length of string
5 min 37 sec

3. Concrete operational thought Versus Formal operational thought
1 min 45 seconds
1 min 47 seconds