Love For MathCreative Math Education

DIY Challenge 3: Drawing without lifting the pen

As we have seen that any city map can be converted into a graph, the problem of traveling on bridges can be thought as being able to draw the graph with 2 conditions:

  1. You should not lift the pen while drawing.
  2. Each edge (or line) should be drawn only once. So, you can’t go over any edge again.

Do you have any ideas about which graphs are possible or not possible to draw? Do you observe any patterns?

What students worked out13

  • Student 1

    the only ones that you cant do are 1 and 5

  • Student 3

    This is my finding Sir

  • Student 11

    This is my finding

  • Student 17

    2,3,4 and 6 can be done

  • Student 2

    2 3 4 6 – POSSIBLE
    1 5 – NOT POSSIBLE

  • Student 2

    SIR CAN YOU SEND THE TRACKER WEEK 2 AND WEEK 3[NOVEMBER]

  • Student 4

    Sir 2,3,4,6 are all possible according to my finding. 1 and 5 are not possible

  • Student 15

    ya sir i also found out that 1 and 5 are not possible and 2,3,4 and 6 are possible

  • Student 18

    all can be drawn except 1 and 5

  • Student 18

    1 and 5 are possible

  • Student 9

    1 and 5 aren’t possible.

  • Student 14

    2, 3 and 6 are possible.

    • Student 14

      plus 4.