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Task 4.4 Number gridLook at the grid shown in Figure 4.1.Figure 4.1 A number gridHow might you interpret the following symbolic instructions? Reveal discussionDiscussionEach arrow represents a single step in the direction it is pointing. So the example above would trace the path 74 ↓ 84 ↓ 94 → 95. Now consider the questions and tasks below.Design some other routes on a number grid that start at 74 and end at 95.Is there any possible meaning for the following? What would you expect as an answer to the following?Finally, what are the connections between the starting point of this activity and 74 + 21?Work with your class to explore some arrow stories of this kind on a number grid. Note down anything that surprises the pupils. Did any of them use negative numbers? Reveal discussion