We did science experiments today at the center. Some of the experiments were designed to be more demonstrative while others allowed the learners to do things themselves. This was a conscious choice we made so that the experiments were not limited by our resources and we could do cool experiments as demonstrations.
The first experiment we worked with involved glycerine. We immersed a glass in glycerine and watched as it disappeared. We had tested this but unfortunately the glass broke on our way there and had a crack. The crack made the glass somewhat visible. However, the learners still agreed that they could not see the glass very clearly. I was happy to see that some learners were happy to not conform and they insisted that they could see the glass still.
I saw some sparks of curiosity with this experiment. One of the learners asked us what would happen if we put our hands inside and whether it would be visible. It was nice to see the learners have this scientific curiosity. At the same time it was slightly disappointing that none of the learners wanted to know why this happened. We initially spun this off as magic water but later told them about glycerine and what it was used for.
We reused the glycerine to quickly demonstrate how liquids can be immiscible. The learners were fascinated to see the liquid separation and were quite excited to put their hands inside and see if they could feel a difference between the two liquids.
We did this after [https://www.youtube.com/watch?v=JSsPn7AK52k](https://www.youtube.com/watch?v=JSsPn7AK52k). This experiment had already been done by some of the learners in their school and they decided to demo it for the others themselves. I was happy to see them be comfortable talking about how oxygen gets used up and water takes its place. It seems that the older learners do a lot of experiments in the school but it has for some reason not been that effective at school.
The other two experiments were allowed more participation for the learners. We made a simple first order lever using two ice cream sticks. Initially I had the learners make a see-saw and use two rubber bands as seats. Later on we moved the rubber bands and developed a rudimentary understanding of torque. I showed them how there were some practical applications of this by pushing a door and showing them videos of a crowbar. However, the learners’ interest at this point had dwindled and I was definitely pushing my luck. The learners had a blast balancing the see-saw though and were quite interested in how we could balance three rubber bands with just one if we placed the three close to the center and one away.
We also made this [https://www.youtube.com/watch?v=7iV1m4j2wJQ](https://www.youtube.com/watch?v=7iV1m4j2wJQ). This did lead to some fighting for resources and many learners wanted to take things home but we had some success with it. We ran out of time to talk about how the colours come together to make a single colour to everyone but one or two learners did confirm that they had seen the white colour. This is not an easy experiment to do for sure and we struggled to really produce the colour.
I would say given the limited time we had put in to prep we achieved some great results with the science experiments. The experiments were sufficiently easy and hands on while also cool enough. Some learners at least were curious and wanted to talk about the science of it while others were excited about just making something. I think with more effort we can come up with more of these since the learners are excited about seeing these in action.