Love For MathCreative Math Education

DIY Challenge 1: Crossing every bridge once

Try to convert this city map into a connected graph.

Can you find a way to travel all the bridges exactly once?

Note: You can attach pictures in the comments when you share your response.

What students worked out20

  • Student 17

    I tried, not able to find a way.

  • Student 1

    I think it is impossible

  • Student 3

    It is possible if we add 1 more bridge.

    • Karanteacher

      Can you show a possible route?

  • Student 3

    THIS IS A GRAPH.

  • Student 14

    we can add a bridge, otherwise it’s too hard.

    • Karanteacher

      Where would add a bridge, if you were allowed to add one?

  • Student 2

    it is impossible

    • Student 2

      without adding another bridge

  • Student 2

    oops did this by mistake as I was trying to uplod pic

  • Student 2

    🙂

    • Student 2

      the graph

    • Karanteacher

      The problem with this graph is that it contains a lot of unnecessary vertices. You can try again and post the graph in the next challenge.

  • Student 4

    It is not possible….I treid drawing a graph and I cant connect all bridges without taking the ✏ off the paper

    • Karanteacher

      Can you share a picture of the graph you made in the next DIY?

  • Student 11

    It is not possible.
    If we could add 1 bridge so

  • Student 15

    sir i made a graph but its not letting me upload it
    its saying that its more than 2 mb

  • Student 15

    sir i would add a brigde in middle of 11 and 5

  • Student 9

    Yes, it is possible if you add a bridge in between B and D.

    • Student 9

      Yes, it is possible if you add a bridge in between B and D.

      (uploading the correct picture)