Designing Original Experiments

Experimental Design

Today, students learned about the importance of experimental design. By designing mock experiments, they learned about the interrelated steps that are crucial to the design of a good experiment.

First, students tried to design an experiment to answer the question “What kind of marble is the best”? but they realized that this question does not lead to a measurable and quantifiable hypothesis (an educated guess). Afterwards they changed their strategy and came up with a different question: Which kind of marble bounces the highest: plastic, metal or wooden? With this question, students were able to construct a hypothesis that can be quantifiable and were able to design an experiment that yields a conclusion: plastic marbles bounce higher.

Students figured out by themselves that one of the keys of a good experimental design is to ask the appropriate questions. Ask them to explain to you their experimental design!

 

Diseño Experimental

Hoy los alumnos aprendieron sobre la importancia del diseño experimental. Al diseñar sus propios experimentos, aprendieron que existe una serie de pasos interrelacionados que son cruciales a la hora de diseñar un buen experimento.

Primero, los estudiantes intentaron diseñar un experimento que respondiera a la siguiente pregunta: “¿qué tipo de canica es la mejor?”. Pero, se dieron cuenta que esta pregunta no permitía plantear una hipótesis cuantificable. Luego, cambiaron su estrategia y plantearon otra pregunta: “¿cual tipo de canica rebota más alto, la canica de metal, plástico o de madera ?”. Con esta pregunta, los estudiantes sí fueron capaces de plantear una hipótesis cuantificable y además lograron diseñar un experimento que los llevó a la siguiente conclusión: las canicas de plástico rebotan más alto.

Los estudiantes se dieron cuenta por sí solos que una de las claves para el diseño experimental es plantear la pregunta apropiada. Pregúntele a su hija o hijo en qué consistió su diseño experimental.

 

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