Fractions - Subtract Mixed Numbers - Planning

The curriculum for Year 5 pupils includes a detailed lesson on subtracting mixed numbers, a key concept in understanding fractions. The lesson utilises a range of resources, including worksheets and a presentation, to ensure a comprehensive learning experience. The key vocabulary introduced includes terms such as 'mixed number', 'numerator', 'denominator', and 'equivalent fraction', with vocabulary cards and definitions available to aid learning. The lesson begins with a review of subtracting fractions with related denominators and progresses to using table models as a visual aid to help pupils grasp the concept of subtracting proper fractions from mixed numbers. The table model is particularly helpful as it concretely demonstrates the 'taking away' process and reinforces the importance of establishing a common denominator before subtraction.

During the lesson, children engage in various activities that cater to different levels of understanding, from those working towards the expected level to those capable of greater depth. In the initial activity, the children use the table model to represent mixed numbers and convert them to equivalent fractions with a common denominator, subtracting fractions by removing shaded parts from the model. This hands-on approach is further supported by group work, where pupils interpret an unknown calculation represented by a table model and suggest different possible solutions, applying their knowledge of equivalent fractions. The lesson concludes with a reflection on the skills used, such as creating table models and finding equivalent fractions, and reinforces the importance of subtracting across numerators only. Differentiated worksheets for fluency and reasoning provide opportunities for independent practice, while the plenary addresses any misconceptions and consolidates learning.