PhET Interactive Simulations, University of Colorado Boulder, https://phet.colorado.edu 
PhET Interactive Simulations, University of Colorado Boulder, https://phet.colorado.edu 
PhET Interactive Simulations, University of Colorado Boulder, https://phet.colorado.edu 
PhET Interactive Simulations, University of Colorado Boulder, https://phet.colorado.edu 
PhET Interactive Simulations, University of Colorado Boulder, https://phet.colorado.edu 
PhET Interactive Simulations, University of Colorado Boulder, https://phet.colorado.edu 
PhET Interactive Simulations, University of Colorado Boulder, https://phet.colorado.edu 
PhET Interactive Simulations, University of Colorado Boulder, https://phet.colorado.edu 
PhET Interactive Simulations, University of Colorado Boulder, https://phet.colorado.edu 
PhET Interactive Simulations, University of Colorado Boulder, https://phet.colorado.edu 
PhET Interactive Simulations, University of Colorado Boulder, https://phet.colorado.edu 
PhET Interactive Simulations, University of Colorado Boulder, https://phet.colorado.edu 
PhET Interactive Simulations, University of Colorado Boulder, https://phet.colorado.edu 
PhET Interactive Simulations, University of Colorado Boulder, https://phet.colorado.edu 
PhET Interactive Simulations, University of Colorado Boulder, https://phet.colorado.edu 
PhET Interactive Simulations, University of Colorado Boulder, https://phet.colorado.edu Projectiles 
PhET Interactive Simulations, University of Colorado Boulder, https://phet.colorado.edu
I have used these excellent PhET simulations for many years, a page on the PhET Interactive Simulations has been available for some time. I have now created an index to the Math HTML5 sims by topic area which includes the topics covered by each simulation.
Remember that teachers can register with PhET and gain access to comprehensive supporting documentation for each resource.
See for example the supporting documentation for Trig Tour.