Measurement Length and Perimeter - Kilometres - Presentation

In Lesson 3, students embark on the journey of understanding how to convert between metres and kilometres, two fundamental units of measurement in the metric system. The lesson starts by engaging students with a discussion on examples of distances that are typically measured in kilometres, helping them relate to the concept in real-world terms. They are then introduced to the definition of a kilometre, learning that it is equivalent to 1,000 metres. This foundational knowledge sets the stage for a series of activities designed to deepen their understanding of length and perimeter in the context of these units.

The first activity challenges students to complete statements that require converting between metres and kilometres, such as 3,000 m to km and vice versa. This exercise aims to develop fluency in moving between the two units and encourages students to consider whether their answers are sensible. Subsequent activities include completing bar models to visually represent the conversions and using comparison symbols to compare different lengths. The lesson also incorporates reasoning tasks, such as calculating how much money could be raised in a sponsored walk based on the distance walked. Finally, students are prompted to apply their new knowledge to real-life scenarios, like estimating the distance from their school to a point 1 km away and discussing the feasibility of measuring out a kilometre on the school grounds.