(gentle music) <v ->In this Year 5 lesson</v> from the unit Human Development, pupils develop their substantive knowledge as they explore changes in human height, specifically, how height changes during childhood. Prior to this, pupils measured the heights of children of different ages and recorded the data in a provided table. They also learned how to calculate the mean average height for each age group. <v ->583. (busy class chatter)</v> <v Nicky>In this lesson, the teacher guides the pupils</v> in learning that scientists use different types of graphs and charts, with line graphs specifically used to identify patterns in data and show how things change over time. <v ->It is C: a line graph. </v> Scientists in the real world use lots of different types of graphs and charts. If we didn't use a line graph or a table, do you know any other charts or graphs that we've done? Lenny? <v Lenny>A pie chart. </v> <v ->A pie chart. Good boy. </v> We could have put it in a pie chart. But today we're going to focus on line graphs. That one's the vertical, which means that one, Vanessa? <v Vanessa>Horizontal. </v> <v ->Yeah. </v> And we think of the horizon. So the x-axis is the one that goes along the bottom. So if we've got something that we're measuring and it involves time, that will be on the x-axis. <v ->This video shows pupils as active participants,</v> working scientifically and purposefully, using the mean averages they have calculated to plot data points and create line graphs. In doing so, they will develop their disciplinary knowledge of recording increasingly complex data using line graphs. Now that pupils have drawn line graphs showing the mean average height of children of different ages, they should progress to the follow-up lesson. There, they will use their line graphs to look for patterns in the data and answer the question: How does human height change over time? Pupils should also be encouraged to use their line graphs to help predict further values. For example, can they use their line graphs to predict the mean average height of a seven-year-old or the age of a child measuring 135 centimetres? (bright upbeat music).