This beautiful graphic was designed by Burnaby North Student, Nolan C. Thank you, Nolan, for your dedication to this project. Your work is incredible and your legacy will live on through your art!
Crossing the Bridge Problem
Here is a great numeracy task from Peter Liljedahl’s website.
Adam, Bob, Clair and Dave are out walking: They come to rickety old wooden bridge. The bridge is weak and only able to carry the weight of two of them at a time. Because they are in a rush and the light is fading they must cross in the minimum time possible and must carry a torch (flashlight,) on each crossing.
They only have one torch and it can’t be thrown. Because of their different fitness levels and some minor injuries they can all cross at different speeds. Adam can cross in 1 minute, Bob in 2 minutes, Clair in 5 minutes and Dave in 10 minutes.
Adam, the brains of the group thinks for a moment and declares that the crossing can be completed in 17 minutes. There is no trick. How is this done? [from Nigel Coldwell]
Here is a solution to this task (found on Nigel Coldwell’s site):
Math Puzzle Resource
Looking for fun ways to engage your students using Math Puzzles? Check out mathpickle.com for some fun puzzles that will be sure to hook your students in critical thinking and problem solving!
Thank you Andrea DeTerra for sharing this resource with us at your last “Differentiation for Advanced Learners in the Math Classroom” workshop!