by MathPickle | Sep 19, 2015 |
Zome Zome is a manipulative that is excellent for the upper grades – however it takes time to put away and is fragile. Nevertheless, there is no manipulative so versatile on the market, so it should be considered. I am now equally in favour (especially for...
by MathPickle | Sep 19, 2015 |
Chomp! (Frederik Schuh, 1952) Here is the game of chomp and a very preliminary sketch of a game to do with linear inequalities. The latter would be a fun class project to perfect – it is NOT good enough to play right now. Let me know of your ideas how to...
by MathPickle | Sep 19, 2015 |
Hunting Submarines (John Costas, 1965) Costas arrays were part of submarine warfare and a great way to get practice with slopes. It is an unsolved problem of mathematics whether a Costas array exists for all nxn squares. The smallest square for which no answer is...
by MathPickle | Sep 19, 2015 |
10 Points, 5 Lines, 4 Points on each Line (Henry Dudeney, 1917) Play with lines in a Cartesian coordinate system in this 1917 puzzle by the great puzzle-master Henry Dudeney. We must say that there are as many squares as there are numbers. Galileo Galilei Join the...
by MathPickle | Sep 19, 2015 |
Parallel Lines and Slopes (MathPickle, 2010) Introduce parallel lines through this beautiful puzzle. Is it even possible? If a solution does exist it is certainly difficult to find, but no promises that a solution actually exists. The other puzzles are good to get...
