This very early in the morning my husband suddenly fell sick, he got fever and shivering so much I couldn't sleep well. We have got plans to do, but it was so sudden, and yes, family comes first. So I took permission to come late to school in case I need to bring him to a doctor nearby, but thanks God, my brother-in-law came and handle everything. So I went to school on time. I didn't prepare much for today's lesson, my mind is still left at home to my husband, so I decided to do an activity I already prepared last week (last week's lesson was canceled due to national holiday).
The purpose of the activity is students can understand the graph of simple harmonic oscillation together with the equation. You can download the worksheet in the link below.
Graph and Equation of Simple Harmonic Oscillation Worksheet Free Download
I started the lesson by dividing the class into groups consist of 3 or 4 students. Each group should have 1 note-taker (also responsible for the stopwatch), 1 performer (also responsible for providing materials), and cameraman (also responsible for ruler). Each group was given 1 plastic cup, nylon string, stopwatch, and ruler. I asked students to download the worksheet first, because we did the activity in the basketball and volleyball courts, so there wouldn't be internet access. Then I asked students to go to the courts.
You can see the activity in the video below. Sorry for the quality of the video.
The total duration the students took aprroximately 2 x 40 minutes. Some of them haven't finished in that duration, but I can safely assign them for homework also.
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