Figure 1: Numeracy (Procedural): difference in attainment in 2018/19, 2020/21 and 2021/22 relative to 2022/23, in months
Ffigur 1: Rhifedd (Gweithdrefnol): y gwahaniaeth mewn cyrhaeddiad yn 2018/19, 2020/21 a 2021/22 o'i gymharu â 2022/23, mewn misoedd