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This page, started in March, 2005, will contain material added to this site or links to sub-pages of such material.
Simon Whitechapel |
Emails starting in 2001. Simon presents solutions for pattern A of magic stars from 15 to 100. |
Jon Wharf |
Emails starting in 2003. Jon confirms the total solution count for all orders and patterns from 6 to11, and provides the total solution count all order 12 patterns. He also supplies some solutions for all patterns of orders 13 and 14. |
Andrew Howroyd |
First contacted me in February, 2005. He also confirms all total solution counts and investigated permutations between patterns of orders 10 and 11. |
Tree Planting problems |
A common recreational mathematics puzzle. here it is limited to star shaped patterns. |
A Fractional Star |
This novelty star consists of proper fractions instead of integers. |
More short articles will appear on this page as they become available.
A type of puzzle common in recreational mathematics is
referred to as ‘tree planting’. They are so called because they are usually
presented as
“A farmer wished to plant x trees in y rows of z trees each. How should he do
this.”
The magic stars may be considered to be tree planting
solutions ,with order 5 being 10 trees in 5 rows of 4; order 6 being 12 trees in
6 rows of 4, etc.
My order 5 page shows the 6
patterns possible for 10 trees in 5 rows of 4. One is the magic pentagram, the
other five have the same numbers suitable placed so they are magic also. My
Polygons and Graphs page has much more on
tree-planting problems.
Here I will present some more complicated star shaped patterns. Interested readers may wish to try assigning numbers so all lines sum the same.
This diagram is the solution to problem 21 in Dudeney’s It has 16 cells to place
numbers so ideally would use the |
 This
stylized order 8 contain 4 more spots for numbers. Here we |
| I have not been able to design a star-like pattern where the number of trees is less then the number of lines. However, the first diagram can be modified to come close, by introducing a third 5 point star to give 20 trees in 20 row of 4. |  |
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This novelty star was found in a grade five exercise booklet (1) Add the 4 fractions in each of the six lines. (1) Harold D. Larson, Magic
Squares, Circles, Stars: Grade 5.,
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Harvey Heinz harveyheinz@shaw.ca
This page last updated
January 27, 2009
Copyright © 2005 by Harvey D. Heinz