Re: Creating an educational simulation to show how sizes of shadow changes when user adjusts slider

When you insert a slider, Storyline automatically creates a number variable to track its position. You can use the variable's value as a condition in other triggers. For example: change the state of [this object] to [this state] when Slider1 changes if Slider1=2. 

It’s worth the effort to learn about variables and trigger conditions, because they provide the real power in Storyline. Here’s more info:

• https://community.articulate.com/discussions/articulate-storyline/the-value-of-variables
• https://community.articulate.com/series/articulate-storyline-360/articles/articulate-storyline-360-user-guide-how-to-work-with-triggers#conditions

Also, you could use the flashlight image as the "thumb" of the slider. That would make it more realistic. Here's the User Guide article about working with sliders: 

• https://community.articulate.com/series/articulate-storyline-360/articles/articulate-storyline-360-user-guide-how-to-work-with-sliders