Measurement Length and Perimeter - Add lengths - Presentation

During a mathematics lesson focused on measurement length and perimeter, students are engaged in activities that involve adding different lengths together. The lesson begins by challenging the students to recall the conversions between kilometres, metres, centimetres, and millimetres, which is crucial for the tasks ahead. For instance, they are presented with practical scenarios such as stacking towers of different heights. In one example, Malachi builds a 14 cm tall tower and places it atop Zach's 27 cm tall tower, leading students to calculate the combined height of 41 cm by adding the two lengths together. This activity reinforces their understanding of addition and units of measurement.

Further exercises require students to estimate and determine the shortest route between two points, such as deciding which path Leanna should take to her friend's house from options of varying distances. Another activity involves adding the heights of children in a class, where students must convert measurements to the same unit to simplify the addition process. For example, the combined height of four children measured by Miss Smith totals 407 cm after converting and adding their individual heights. The lesson also includes reasoning problems, where students explore different combinations of blocks to reach a certain height and solve disputes over total family heights by correctly adding measurements. These varied tasks aim to enhance students' fluency in working with lengths and understanding the importance of consistent units when performing calculations.