After students have finished connecting their spheres with the arrows, bring everyone together as a class to compare their systems and explain their thinking.Focus on having them explain their reasoning, referring to prior experience, such as with the Carbon Cycle Role-Play. Teacher Tip: Check for understanding by glancing at posters as they work, and guide students as appropriate. Emphasize that the arrows should face the appropriate direction on their posters. Tell students that their task is to place the arrows between the appropriate spheres.If needed, go over some of the vocabulary on the arrows with the students.Tell students that these arrows show how carbon moves from one sphere to another. Give each group of students a set of 9 Carbon Flow Arrows, but don’t distribute the human alteration arrows yet.Have each group create a diagram by taping the spheres and the arrows onto the poster in such a way as to explain how carbon flows through the four spheres.Then, have students write the the name of the sphere on their circle and draw something that represents that sphere (e.g., leaves, clouds, drops, mountains). Have each student choose one piece of paper and cut a large circle from it.
Referencing your color key, tell students that each piece of paper will represent one of the four spheres: biosphere, atmosphere, hydrosphere, and lithosphere. Give each group four pieces of construction paper, each a different color.Have each group help cut out and label the spheres.Explain that their task will be to work together to design a carbon cycle poster which illustrates how the carbon moves between the four different spheres. Break students up into groups of four and distribute poster paper to each.
0 kommentar(er)
