So, surface area to volume ratio is a common concept in Science…
In digestion, they learnt that food are broken into small pieces so that it has larger surface area to volume ratio for enzymes to work on.
But, it’s hard to student to grasp the concept. They don’t get it how food in smaller pieces have larger exposed surface area to volume ratio.
So, here’s a simple demonstration.
First, make 2 jelly using red cabbage (reason being it’s a natural pH indicator) with identical moulds. Cut only 1 of the jelly into quarters. Then, add them into container of equal volume of lye water (alkaline solution).
Due to red cabbage being natural pH indicator, the jelly will change colour in alkaline solution (yellow in strong alkaline). As seen, the jellies cut in quarter turned yellow faster than the larger jelly because it has larger surface area to volume ratio.
I started this year figuring out use of google forms for Break the Code themed lessons. I’ve been seeing such lessons by fellow teachers on IG/ FB and I guess it’s finally time for me to try in class. Better late than never, right?
One of the advantages of gamification of lessons is that it increases students’ motivation. This was the most evident during my lessons, because students took much faster time to complete the questions compared to paper-pen approach. I mean naturally most of us are competitive, right?
Having an interesting storyline helps too, for example by having role play for students to be on a challenge or mission. With this students are motivated to work towards the end goal.
The downside of this is time for planning such lessons. It is quite time consuming, but once you get the hang of it and everything comes together, trust me, it’ll be worth it. Especially after hearing from your students how they enjoyed it very much and when’s the next escape room/ break the code lesson 😉
Here are the 2 escape room/ break the code themed lessons I’ve done: