What is the total mass? What is the total of the dark green dumbbells? Can you make a combined mass (weight) of 7 kg using these? Of 8 kg? Of 9 kg? Of 10 kg? Can you make a story out of this picture?
What do you notice?
What do you wonder?
Can you tell a story about this image?
(Click the image to see some hints/ideas for discussion.)