Abacus is a unique maths toolkit for inspiring a love of maths and ensuring progression for every child. Written by an expert author team, it has been carefully crafted on a robust approach to creating inspired and confident young mathematicians. Year 4 Mastery Checkpoints 37 short activities, to be used throughout the school year Designed to help you check mastery of key concepts straight after teaching, enabling quick intervention for those children who need it ‘Have you mastered…?’ questions aim to assess mastery of the relevant outcome ‘Champions’ Challenge’ questions aim to assess whether some children have achieved mastery with greater depth ‘My Learning’ pages provide opportunities for children to reflect on their learning