TY - JOUR DA - 1988 LA - eng IS - 3 M2 - 215 PY - 1988 SN - 0021-8251 SP - 215-232 T2 - Journal for research in mathematics education TI - Identifying fractions on number lines UR - https://nbn-resolving.org/urn:nbn:de:0070-bipr-25371 Y2 - 2024-11-23T12:05:14 ER -