Bojagi (Gr. 4-12)

Bojagi – Visual-reasoning┬ámath puzzles

Created by David Radcliffe, Bojagi combines multiplication with visual-reasoning skills on a grid to create interesting math puzzles. The directions are pretty straight forward:

“Draw a rectangle around each number by clicking and dragging with a mouse. Each rectangle should contain exactly one number, and the area of the rectangle should be the number that it contains. Rectangles must not overlap.”

Once you have completed the training puzzle, click on the List menu to access a growing list of user-generated puzzles, some of which are quite challenging. After you have acquired enough experience with the puzzles, click on the Create menu and try your hand at making one of your own!

INTEGRATION

  • Put a new spin on learning multiplication facts using this site.
  • Have students work in pairs to solve the same problem then compare their results to show that there may be more than one way to solve a problem.
  • Pair with an interactive whiteboard and have students solve one number at a time. Can they solve a number and still leave room for their peers to solve the remaining puzzle numbers?

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Website of the Week: Jigidi (Gr. 4-12)

Jigidi – Free online jigsaw puzzles

The concept is simple; visit this site for access to an ever growing library of jigsaw puzzles created by people like you. Search for puzzles based on a theme such as seasonal, mosaics, machines, plants, animals, and more. You can also search by puzzle difficulty where easy is 60 pieces or less and challenging puzzles have 240 plus pieces. In the puzzle workspace, you can zoom in or out to give yourself more room to work. Turn on ‘full screen’ mode to remove all other distractions and focus on the challenge at hand. The site requires the Flash plug-in to make the puzzles interactive.

If you create an account, then you can upload your own images to make your own jigsaw puzzles to share. This will also remove ads from the puzzle pages. An account is free and does not require an email address to register.

INTEGRATE

  • Create jigsaw puzzles using images relating to your current unit of study for students as either an introductory activity or a fun review game. Challenge students to see who can finish your puzzle the fastest.
  • Have students upload their own images or take pictures of student work to then be shared in puzzle form with parents.

an example of a jigidi jigsaw puzzle in full screen mode