  This EPTCS volume contains the proceedings of the ThEdu'21 workshop, promoted
on 11 July 2021, as a satellite event of CADE-28. Due to the COVID-19 pandemic,
CADE-28 and all its co-located events happened as virtual events. ThEdu'21 was
a vibrant workshop, with an invited talk by Gilles Dowek (ENS Paris-Saclay),
eleven contributions, and one demonstration. After the workshop an open call
for papers was issued and attracted 10 submissions, 7 of which have been
accepted by the reviewers, and collected in the present post-proceedings
volume.
  The ThEdu series pursues the smooth transition from an intuitive way of doing
mathematics at secondary school to a more formal approach to the subject in
STEM education, while favouring software support for this transition by
exploiting the power of theorem-proving technologies.
  The volume editors hope that this collection of papers will further promote
the development of theorem-proving based software, and that it will collaborate
on improving mutual understanding between computer scientists, mathematicians
and stakeholders in education.
