Big Idea

Today, we’re going to explore how oscillations behave.

Lesson Takeaways

Mathematical:

  1. Sine waves
  2. Amplitude
  3. Angular Frequency, Period

Computationally:

  1. Wait
  2. Erase

Intro Questions

  1. What is an oscillation?
    1. Oscillation is the repetitive back-and-forth motion of a system around a central equilibrium point.
  2. What are some things in life that oscillates?

Activity 1: Spiral

🎯 Task for students: Start by making any animating any expanding spiral of your choice using loop and fn:

fn x 0

loop 360 do
  fw x
  rt 90
  fn x x+1
  wait 0.01
end

image.png

As you know, increasing the number of loops will make the spiral expand even faster.

Today, we’re going to be introducing a new function that makes the same oscillate instead.

Replace the fw x with fw sin[x] instead.