In the classroom
On a projector, make the code large and leave it up until the last hand is down. On paper, 2 to 3 cm is enough for scanning across a desk.
Label each code with what it opens. Students and parents are rightly careful about scanning unknown codes.
Reuse codes term after term
A poster on the classroom wall can open this week’s assignment. With an editable code you change the link each week; the poster stays.
Free for most classrooms
Static codes are free and never expire. The free plan adds 3 editable codes with scan counts, which is enough for a weekly-assignment poster and a newsletter code.