1. Department of Education and Psychology, University of Trás-os-Montes e Alto Douro, Vila Real, Portugal
2. CIIE (Centre for Research and Intervention in Education), University of Porto, Porto, Portugal
3. Department of Engineering, University of Trás-os-Montes e Alto Douro, Vila Real, Portugal
4. LabDCT/CIDTFF (Research Centre on Didactics and Technology in the Education of Trainers), University of Aveiro, Aveiro, Portugal
5. Mathematics Department, University of Trás-os-Montes e Alto Douro, Vila Real, Portugal
6. CMAT (Centre of Mathematics), University of Minho, Braga, Portugal