A learning toy comprising of a set of stackable numbers, 1-10. The height of each number is proportional to its value, e.g. 5 is half the height of 10, 3 is a third the height of 9, etc.

The Fusion 360 file has also been upload. The height of 10 is 144.4 to fit on small build plates, but the files can easily be edited to make any size. Simply edit the appropriate user parameter and all the models should update, but you will need to go in to adjust the inscribed lettering for each digit.

Number 4 either sits on top of 6, or goes on its side.

I suggest an infill of at least 15% top help the inscribed numbers print better - I use the 'Lines' pattern in Cura because whilst it's a bit weak, it creates a denser support for fine top surface detail. 10 has a small bridge that shouldn't required supports. Everything else should be very straight-forward to print.