| Discipline: | Math | 
| Topic: | Vector Addition | 
| Product: | PhET Labs Interactive Simulations | 
| Vendor: | PhET Labs | 
| Cost: | All PhET simulations are available free of charge from the PhET Website | 
| Technical requirements: | Java and Flash | 
| Accessibility info: | Accessibility and PhET For additional information contact phethelp@colorado.edu  | 
     
| Link to Lab: | Vector Addition | 
| Reviews: | Research-based simulations of physical phenomena | 
| Description: | All of PhET simulations are extensively tested and evaluated | 
| Instructional materials: | instructor and lab manuals available online from PhET Websites | 
| Case studies: | PhET Research Page Over One Hundred Million Simulations Delivered: A Case Study of the PhET Interactive Simulations  |