This book constitutes the proceedings of the Third International Conference on Technology and Innovation in Learning, Teaching and Education, TECH-EDU 2022, was held in Lisbon, Portugal, in August/September 2022.The 21 full papers and 18 short paper presented in this volume were carefully reviewed and selected from 80 submissions. The papers are organized in the following topical sections: Emergent technologies in education; Online learning and blended learning; Computer science education and STEM; Digital tools and STEM learning; ICT and critical thinking in higher education; Digital...