|  
 Blue earth and the red satelite Phase 1 the preparing assignmentIn five pictures (a,b,c,d,e,) you see the blue earth and a
                red sattelite.
 The arrow shows the direction of the trajectory
                      of the sattelite: At time 0 the sattelite starts and at
                  time 10 the sattelite arrives at the end of the arrow.
 Here you see eight possible trajectories.
 
 The question is: which number do you choose so the curve fits
                  as good as possible with the picture a,b,c,d,e? Write
                    your choice in the table and put it on the Forum
 Compare your table with the table of your partner student. Phase 2Discussion to convince each other
 At the end of your discussion you will have the same opinion
                  about the right numbers in relation with the pictures. And
                  you are able to explain your results to other students in yopur
                classroom.
 Phase 3 real objects
 Try to find real objects you can show in relation with your
                  presentation.
 
 
                       |