Mass, Capacity, Temperature - Compare mass - Planning

In the second year of primary education, a lesson on measurement focusing on mass is introduced, where children learn to compare the mass of various objects. The lesson revisits concepts from Year 1, enhancing the children's understanding of mass and how to measure it using balance scales. Key vocabulary such as 'object', 'mass', 'compare', and symbols like '<' (less than) and '>' (more than) are emphasized. Through a series of activities, children are shown how to use balance scales to determine which objects are heavier or lighter by observing which side of the scale is down or up. They are also taught to order objects by mass and to use the correct symbols and vocabulary to describe their findings.

The lesson plan includes interactive elements such as partner discussions and the use of real-life objects alongside presentation slides to engage the children in practical learning. They are encouraged to predict, measure, and compare the mass of items, and to express their observations using terms like 'more' or 'less'. The lesson aims to correct common misconceptions, such as the assumption that a larger object is always heavier. Differentiated worksheets and reasoning activities cater to varying levels of understanding, from 'working towards' to 'greater depth', challenging the children to apply their knowledge to increasingly complex tasks. The lesson concludes with a plenary session where children reflect on what they have learned, the skills they used, and any tricky parts of the lesson, ensuring that they remember the key concepts of mass comparison going forward.