| Titel | Number concepts - processes of internalization and externalization by the use of multi-touch technology |
| Medientyp | Book Chapter |
| Jahr | 2013 |
| Autoren | Ladel, S, Kortenkamp, U |
| Herausgeber | Benz, C, Brandt, B, Kortenkamp, U, Krummheuer, G, Ladel, S, Vogel, R |
| Book Title | Early Mathematics Learning. Selected Papers of the POEM 2012 Conference |
| Seiten | 237-256 |
| Herausgeber | Springer Verlag |
| City | New York |
| Schlüsselwörter | ACAT, Activity Theory, CERMAT, Multi-Touch, Technologieeinsatz, Zahlkonzepte |
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