2.In Task 1, think deductively about why (1) is true, based on the fact that in the extended calendar “number go up by 1 to the right, and by 7 down.” 3.In Task 2, think of how the short arrows in (1) can be made longer. One way is to extend the calendar to 98. 4. Some arrow still cannot be made longer, even if you do this .Teach the children how to use expansive thinking to make these arrows longer by leading them to realize that they can turn the table into a cylindrical shape.