| Ola Helenius - Vol. 37 Num. 2 (2017) | ||
| The voice of curriculum developers in teacher guides ABSTRACT | 35-39 | |
| Ola Helenius - Vol. 43 Num. 2 (2023) | ||
| Writing down the solution separate from solving the problem ABSTRACT | 41-46 | |
| Ola Helenius - Vol. 45 Num. 1 (2025) | ||
| Gérard Vergnaud in action ABSTRACT | 50-55 | |
for the learning of mathematics
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