What are the green numbers describing?
What should the green numbers say when you reach the vertical line again after traveling all the way around the circle?
When the green numbers say 90, how far around the circle did the red line travel? A quarter turn, a half turn, or a 3 quarter turn?
When the green numbers say 180, about how far around the circle did the red line travel?
When the green numbers say 270, about how far around the circle did the red line travel?
When the water bottle was exactly vertical but upside down, what did the green numbers say?
How did the tree's orientation (the way it's facing) change when you rotated it 90 degrees?
How did the bear's orientation (the way it's facing) change when you rotated it 270 degrees?