| Gerhard Walther - Vol. 4 Num. 3 (1984) | ||
| Communication: Action proof vs. illuminating examples? | 10-12 | |
for the learning of mathematics
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Search Table of Contents
| Gerhard Walther - Vol. 4 Num. 3 (1984) | ||
| Communication: Action proof vs. illuminating examples? | 10-12 | |