Which widget should I start with?

The projectile launcher, unless the lesson is a free-body diagram, an incline, or a collision. Each widget page has its own snippet.

Embed in Google Sites

Embed a simulation in Sites

In Google Sites, insert an Embed block, choose Embed code, and paste the snippet from the widget page. Publish. Students drag or type on your page with no extra login.

Pick a simulation on the widgets hub, or start with the projectile launcher widget. Classroom notes: teachers. Guide: projectile motion.

Steps

Open the widget page for the simulation you want and copy the snippet, caption included.
In Google Sites, choose Insert, Embed, Embed code.
Paste, then publish the site.

Projectile snippet to paste

<iframe
  src="https://www.physicslearn.org/embed/projectile-launcher"
  width="100%" height="640" style="border:0"
  title="Projectile launcher"
></iframe>
<p style="font:14px/1.5 system-ui,sans-serif;margin:.5rem 0 0">
  <a href="https://www.physicslearn.org/interactives/projectile-launcher?utm_source=embed&utm_medium=referral&utm_campaign=embed-simulations">Projectile launcher</a>
  by <a href="https://www.physicslearn.org/?utm_source=embed&utm_medium=referral&utm_campaign=embed-simulations">PhysicsLearn</a>
</p>

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