Negotiation types and the recipient design in a family interaction during block play - E. Acar Bayraktar and B. Brandt

Critical aspects of abstracting repeating patterns in early years - M. Bjørnebye 

Learning Trajectory for the measure of length: how to move toward the sense of measure - E. Robotti E. and A. Boscolo

Mathematical potential of natural learning situations in early childhood education - J. Bruns and T. Mette

Fostering logical reasoning with the "Betta-the-Bee" game: a design perspective - R. Casi, C. Sabena, C. Soldano

Time and its measurements in Kindergarten: from calendar to hourglass, an example of teaching design - B. Di Paola, M. G. Fiorentino, A. Montone

Mathematical Modelling in Early Years of School - T. Fosse, T. Lange, T. Meaney

Assessment of early arithmetical skills in natural learning situations - H. Gasteiger and C. Benz

Preservice kindergarten teachers designing and discussing mathematics in games - E. Severina, M. Hope Lossius, S. Haaland, A. Furnes

On the way to pattern-making: Young children’s non-pattern creations in a free-play environment - M. M. Lüken

Enhancing an Early Inclusive Mathematical Learning? Investigating Cubarithm’s semiotic potential for children with visual

impairments - C. Manolino and T. Armano

Building a joint problem-solving space: how collaboration in collective mathematical reasoning can develop - P. Markkanen, H. Eriksson and L. Sumpter

From concept to implementation: Lessons learnt from developing a mathematical learning app - C. Marx, K. Moeller, S. Roesch, B. Rudzewitz, C. Benz

STORYTELLING ACTIVITY FOR STIMULATING PROPORTIONAL REASONING IN YOUNG CHILDREN - M. Mellone, M. Spadea, R. M. Lo Sapio

A synergic construction of the Natural number’s concept in kindergarten - B. Di Paola, M. G. Fiorentino, A. Montone, G. Ricciardiello

Diagrammatic activity and communication about it in a multilingual responsive mathematical learning environment in kindergarten - B. Ott, P. Sprenger and Á. Uribe

“I could cut them in half” – An interview study on first graders solving different types of division with remainder problems - L. Wiggelinghoff and A. Peter-Koop

Preschool children’s collaborative explorative mathematical argumentation - F. Reuter and C. Benz

Assessing children’s cardinality competence using authentic observation in kindergarten - R. A. Rinvold and L. B. Skorpen

Geometric concept formation using the concept of quadrilateral - M. Sprenger

Sandwiches: Problem solving on combinatorics in early mathematics education - J. van Bommel, A. Ebbelind and H. Palmér

Norwegian and Swedish early childhood preservice teachers’ views on digital technologies for supporting mathematics explorations - M. K. Vee,  D. Lembrér and T. Meaney

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