Statistics - Line graph problems - Presentation

The lesson on interpreting line graphs aims to equip students with the skills to analyze and solve problems using graphical data. The lesson begins with a discussion on the advantages of using line graphs over bar graphs, prompting students to consider the similarities and differences between the two types of representation. Following this, the first activity presents a line graph showing television viewership at different times. Students are tasked with comparing the number of viewers for two programs watched by Malachi and Esin, identifying the difference in viewership at various points, and deducing which program had a higher viewership at a specific time. The clarity of the information organization and the effectiveness of the line graph in conveying the data are also focal points for student evaluation.

Further activities delve into practical scenarios where line graphs are utilized. One such activity involves two families traveling to Bridlington, with a line graph depicting the distance traveled over time. Students are asked to determine the arrival time of family A, the distance each family had traveled by 09:00, which family took a break, and the remaining distance to their destination. This exercise not only reinforces the concept of reading line graphs but also incorporates real-life applications. Additionally, the lesson includes reasoning tasks where students hypothesize what a graph could represent and label its axes, considering if there are multiple ways to interpret the data. They also compare different journeys on a graph, speculate on events during the journeys, and engage in independent work to further solidify their understanding of line graphs and their use in various contexts.