I found the instructions for these stars on a Danish website.
When I asked Google translate for the English translation of terningestjerne it gave me dice star, but the translation of terning is cube, so I suspect that cube star is a more reasonable equivalent. The photographs in the instructions are labelles Flettrebenetsterne. With a little persuasion I got Google to translate that as Merge Three-legged Star. (Are any Danish readers out there able to confirm this?)
The instructions on the site are excellent, so I am reproducing them below. (If you can read Danish, or are willing to let Google translate the written instructions, please visit the link provided above.) You will need three strips of paper about 2 cm (0.75″) x 28 cm (11″).
This step takes a little fiddling, but gets a lot easier with practice.
In the hopes of making the last stages a little clearer, here’s an image of stars made with three different colours.
The green pointy finger indicates where I cut corners off to make the last stage of assembly a little easier.
If you use large enough strips of paper, say 4 cm wide (a little over 1.5″) and proportionately longer, you can wrap small presents inside. I have done two gifts that way.
Warning: if you found Froebel stars addictive, these may have the same effect. I didn’t really need to fold that many stars for the first image.