Fully printable clocks to learn time and how to calculate it. got blocks to illustrate 5, 15 and 30 minutes or (10 past 3 and etc.). 

Better with magnets (3x1 mm) so it could be hanged somewhere and blocks will not fall out. 

I used this ones: https://share.temu.com/Ussz266mzkA

Assembly is very simple, for clock hands use a bit of force, should lock in perfectly

For magnets - also just a little bit of force and small hammer, magnets should fit in perfectly