Answer:
Mark's model is nonsense
Step-by-step explanation:
- Both Mark and Robyn used "based-ten blocks" to show that 200 is 100 times 2.
- Marks model shows 20 instead of 2.
- His model shows 200 is 10 times as much as 20. It does not make any sense.
- Robyn model shows 2 correctly, implicating 200 is 100 times as much as 2.
- Because,
2 * 100 = 200
So Mark's model is nonsense!
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