Each week we feature a new puzzle that you
can print out in black and white on a single page and use as a
black line master with your students. Schools have reported great
success by encouraging families to work on the puzzles together at
home. Print out the PDF file, file the solution page and make
copies of the Challenge page to hand out to your students.
The four bugs standing in the corners of a square start to crawl one
toward each other. Here comes the question: How far does each bug travel
before they all meet?
It's the visual one but it's not an illusion. Count how many
dot-per-corner squares are hidden in the given figure and don't let the
answer square your error.
Help each of the five men to reach their
respective houses without crossing the routes of the rest four.
Finding the proper routes leading to the aim is always a good
challenge itself.
It is known that a cylindrical hole six inches long is drilled straight
through the center of a solid sphere. Is this information sufficient for
calculating the exact volume remaining in the sphere?
Development of the chess queen theme. This time it's in the little shift
that no queen can attack another - simply let 'em live in peace on a small
chessboard.
Travel through all the cities on the Mars' surface so that you can spell a
complete English sentence at the end of your trip. There are some doubts if
such a trip is ever possible. What would you say?
The Postman's route runs through a dozen of houses, but this day he only
needs to visit half of them. The challenge for him is to choose the
shortest route. Can you help the Postman with that?
One of the proposed seven chocolate pieces can be copied six times in
order to fit them into a rectangular chocolate bar. The key questions
are what piece is it and what the final chocolate bar should look
like?
It is required to dissect an obtuse triangle into acute triangles
only. The first question is whether it is possible at all? If the
answer is "Yes", then the next question would be "How?"
It is required to dissect an obtuse triangle into acute triangles
only. The first question is whether it is possible at all? If the
answer is "Yes", then the next question would be "How?"
Two distances are associated with three coins. Could you find a
certain position of the coins so that the distances are equal? Is
there any way how the moving coins can distract you from the mission?
Unite the sixteen stars in the sky in a single constellation with just
six connected straight lines. It is not required to be an expert
astronomer to complete this starry task.
The three-in-one puzzle set. It contains a chessboard and two chess
Six's. Every shape has to be composed of the entire set of 12 pieces.
And... don't forget to alternate the dark and light cells.
The six numbers from 1 to 6 have to be placed along the sides of a
triangle so that to create some magic sum along each of its sides.
What magic sums can be there?
The circus is in town! Four families got tickets for a day of fun
under the big top. Each family brought a different number of children
and each family had a different favorite act of the day. Determine the
full name of each couple, how many children each had, and what each
family's favorite act was.
Cover a big circle entirely with the five smaller circles. But keep in
mind: when a smaller circle is placed on the big one you aren't allowed to
move it anymore.
Another classic puzzle gem that should bring you an "aha!" no matter, if
you solve it by yourself or go right to the solution page. Enjoy the
beauty of the logical proof!
It's the visual one but it's not an illusion. Count how many
dot-per-corner squares are hidden in the given figure and don't let the
answer square your error.
A trapezium is divided into five simple pieces. It is stated several more
shapes can be created when the pieces are rearranged. What are these
shapes? Can you create all of them?
The four intersecting circles have to be drawn in the traditional way -
neither taking a pencil off the paper, nor going over any part of the
line twice.
If several silhouettes are superimposed in a pile in some certain way a
silhouette of a rabbit can appear. Moreover two different rabbit's
silhouettes can be obtained. Can you find them both?
