"Yenka is a new range of modelling tools for schools, which let you simulate concepts and create content easily.
They are designed for use either by teachers or by students, on whiteboards or on individual computers."
They are now offering free Yenka home-use licences to students and teaching staff at recognised schools, colleges and universities. There's no need to purchase anything, and it's not time-limited. A teacher needs to register. Then, they provide licence codes so that both teachers and students can install Yenka at home.
Well done Yenka, great offer for students.