Arrange the ornaments in the box so that no more than
three are in any line horizontally, vertically or diagonally.
Teacher: There are also self-checking versions of this activity for different sized grids:
2 by 2 3 by 3 4 by 4 5 by 5
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Teacher, do your students have
access to computers?
Here a concise URL for a version of this page without the comments.
Here is the URL which will take them to a related student activity.
Investigate other sized ornament boxes using a spreadsheet.
Use "1" to represent an ornament in the box.
Set up row and column totals to check whether your solution is correct