Primary school teaching...project!

Hello!! I am studying to be an English teacher in Spain and Im doing my Practicum in a Primary school. 4th, 5th and 6th grade! So I have to choose a topic to make my Project. At the same time Im going to Sweden, Erasmus, and I will work in a Swedish school, so I would like to focus my project with connections between "my Spanish school an my swedish". I'm not sure what to do!!! I know someone who chose a catalan storie to work in Sweden and a swedish storie to work in Spain. The sessions have to be around 8. Do you have any idea?? I will appreciate it!! my email is (Email removed, please add it to your profile)