Teaching Hydrostatic Pressure to Sec 3 (Learning Study)

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Contributed by Wee Ling and Mark Shone, Mei Hong and Han Pin


What was the current need/gap that you were addressing?

Students had multiple misconceptions about hydrostatic pressure that we tried to address in a learning study project we did several years ago led by Boon Hian. Using the existing apparatus and worksheets, we proceeded to video the short demonstrations to address the misconceptions. We wanted to achieve the following: 1) free up the labs for other uses (lab closure for examination preparation and hbl made it very challenging to schedule lab sessions) 2) clearer explanations with each demonstration (as teacher can always pause the video to elaborate and students can also re-play the video as many times as needed) 3) save water as the large vessel requires a lot of water to fill and imagine if the 12 classes of 36 students were to do each as a hands-on experiment 4) save teachers the hassle of troubleshooting the datalogging app for the pressure sensor for each group of students 5) allow teachers to teach hydrostatic pressure without worrying about scheduling the lab demonstration within the same week.

How had it been experimented and enacted?

The experiment was conducted as a hands-on for the students a few years ago. We could not manage to arrange for the students to conduct this experiment for the recent few years due lab constraints. Some of the apparatus are also.

Which group(s) had benefited?

Students (Selected Groups), Teaching Staff (Selected Groups), Non-Teaching Staff (Selected Groups)

What was the positive impact?

The video was effective in communicating and correcting the misconceptions that students typically had, namely: - Liquid pressure is dependent on shape of container - Liquid pressure is dependent on volume or mass of the liquid It was also effective in demonstrating that atmospheric pressure is approx. 103 KPa.

What is a future need that this IdEas@work could meet?

The video can be re-used each year to teach hydrostatic pressure. Some of the apparatus may not be working well in time to come and students may not able to conduct the same experiment in labs in future if the apparatus are not replaced (replacement is quite costly) but we will still be able to show the video :)




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