This graph is the beginning of a project that students complete when they learn about the Seasons called the Season Hotel Project. (I will upload that next)
This Daylight Graph shows length of day at different latitudes. I give this graph as a homework at the beginning of the unit on Seasons after starting in class. Students will construct the 8 line graph in order to see the changes in daylight across the globe and that the distance from the Equator will directly effect this. The daylight graph is by far my favorite graph (yes, i am a nerd) of 8th grade. Students start to notice very interesting things about daylight across the globe in March and September (all places on Earth with have about 12 hours of daylight), and when comparing latitude lines that are equal distance from the Equator. I have students add this graph to their notebooks and then label the important dates on the graph such as Equinox, Winter & Summer Solstice for each hemisphere. Once the graph is completed, students then complete the Daylight Graph Interpretation WS that helps students understand the graph and what it shows about daylight changes.
Before I have them complete, I walk them though setting up the graph and completing accurately. I teach them that the independent variable belongs on the X axis and that Daylength belongs on the Y axis. They label each line with latitude, city and country at the end of each line in order to facilitate the graph interpretation WS.