Published in: Enfance ; Vol. 38, n° 2-3, pp. 117-132

Published in: The Journal of Mathematical Behavior, 17 (1998) 1, Seite 79-103

Published in: Enfance, 38 (1985) 2, Seite 117-132

Published in: Educational Studies in Mathematics, 12 (1981) 1, Seite 113-122

Published in: Educational Studies in Mathematics, 12 (1981) 1, Seite 113-122

Published in: Cahiers Claude Simon (2014) 9, Seite 9-20

Published in: International Journal of Science Education, 15 (1993) 2, Seite 199-212

Published in: For the Learning of Mathematics, 2 (1981) 1, Seite 34-42

Published in: Littérature ; Vol. 100, n° 4, pp. 105-124

Published in: Interactive Technology and Smart Education, 1 (2004) 1, Seite 55-66

Published in: International Journal of Distance Education Technologies, 2 (2004) 3, Seite 26-35

Published in: Lecture Notes in Computer Science (2003), Seite 185-192

Published in: The Journal of Mathematical Behavior, 17 (1998) 1, Seite 1-4

Published in: Journal for Research in Mathematics Education, 19 (1988) 1, Seite 86

Published in: Geobios, 15 (1982), Seite 65-83

Published in: Littérature, 100 (1995) 4, Seite 105-124

Published in: Radio Science, 58 (2023) 1

Published in: Radio Science, 58 (2023) 1

Published in: Pediatrics, 144 (2019) 2_MeetingAbstract, Seite 577-577