A particularly important aspect of learning physics is using models of physical objects, processes and phenomena. Modeling is an important component of learning and cognitive activity. This determines its importance for the formation and development of students’ knowledge and skills. The Physics Education Technology (PhET) project creates useful simulations for teaching and learning physics and makes them freely available on the PhET web site: http://phet.colorado.edu The simulations are interactive, animated and visual. Some ideas for their using in physics education are presented. They can be used in various of ways, including demonstration experiment as part of lecture, student group work or individual worksheets, homework assignments or labs. The possibility for using simulations in remote education is considered. Students are given interactive assignments. They include interactive problems in the form of computer simulation and questions related to it. The students work with data which they analyze and present tabular and graphically. This approach suggest activities based on enquiry. In result their motivation and interest in physics increases.