This is the question students recently dove into on both sides of the river during the annual Kid Dunk investigation. It is part of the “matter unit” in grade 7 science.
The Kid Dunk has long been a favorite among students on both campuses.
During our investigations into matter — properties, measurement, etc. — we engage in several lab activities. One involves displacement. It is a way to measure the volume of an irregular object.
When posed with the question of finding human volume and density, students are always quick to jump on wordplay, declaring, “Grade 7 students are irregular!”This is certainly true.It is a great lead-in to questions such as “Do all grade 7 students have the same density?” or “What factors affect the density of a grade 7 student?”
Always followed by a lively discussion of variables, data collection, and hypotheses, the Kid Dunk investigation is an activity that brings science to life for many students and really sets the tone for the rest of the year.
Often, the end game in middle school science is to make learning a fun experience.The formula for our Kid Dunk investigation seems simple:just add water.It is such a bonus to hear students declare, “This is so much fun!” This is while they are in the midst of writing down data, discussing potential sources of error, and reminding the students being dunked to “Make sure you keep the same amount of air in your lungs each trial so we get consistent volume measurement.”While of course they are expected to follow sound scientific method and collect accurate data, when students recognize that learning can happen in the middle of a good time — that is truly a beautiful thing.
By Kevin David, Grade 7 science teacher, Pudong campus