I am an aerobics teacher, and the first-level routine of mass aerobics has the movements of children's groups, with the same pace under the feet, different arm movements and good music. I think it is more suitable for primary school students to jump.
In addition, you can also find some campus group dances and campus line dances to teach. There are many videos on the Internet. You can see them first. Everything from China Normal University is good. You can refer to them.