“…More precisely, a study by Strand (1999) showed that girls performed better than boys at the age of four years (Baseline measurement) and at the age of seven (Key Stage 1 measurement), but that the progress of boys was greater than that of girls between the two measurement points. Similarly, compared to same aged boys, better early numeracy skills have been found in Finnish girls aged 4-7 years (Aunio, Aubrey, Godfrey, Yuejuan, & Liu, 2008;Aunio, Hautamäki, Heiskari, & Van Luit, 2006) and in Australian girls aged 5-6 years (Boardman, 2006). In contrast, Jordan et al (2006) found that kindergarten boys outperformed girls in the overall number sense, nonverbal calculation and estimation skills.…”