I recently gave a lesson on direct variation. I normally do an informal exploration using Hooke’s law to demonstrate this. This year I found a website with virtual science labs through the University of Colorado. This website has a ton of awesome interactive activities. I think the lab lost something when I took away the physical Hooke’s law devices, but the simulation gave me a lot more avenues to explore. I look forward to expanding this lesson in the years to come.
Link to the PHET website:
Link to my activity worksheet:
hooke’s law (word document)