Magic Number Square

Introduction: Create a 3 x 3 grid and use each number from 1 to 9 just once to fill each grid space, so each line adds to 15. It is all
created with natural objects that can be moved around. 15 is the magic number every row and column can total for a 3 x 3 grid, when the numbers 1-9 are only used once. An activity to problem solve and think in numbers all in one.

Instructions:

1. Use the sticks to create a grid 3 x 3 in size. Chalk on
   the floor could also be used. Same dimensions as
   a noughts and crosses board.
2. Find nine different natural items like pebbles,
   feather, pine cones, seeds. Just 1 object is
   needed for the first item(e.g. 1 feather), then 2
   items for the second item (e.g. 2 leaves), then 3
   items for the third (e.g. 3 twigs) etc up to 9 items.
   This will be 45 items in total.
3. Start with just one row. Can you select three
   different items, one for each section of the grid
   row, so that they total 15 when counting every
   item in the row.
4. Now add items to the remaining grid squares so
   every row and column add up to 15. Move all the
   items around until the problem is solved,
   including the original row if necessary.