You can have some fun by making your student solve logical puzzles.
For example:
Suzi, Jack, Mary, and Bob were playing mah-jong. By the end of the game, the four players came 1st, 2nd, 3rd, and 4th. However, someone lost the score paper and nobody knows the score now. So, the judge asked each of the players what they remember:
Suzi: I didn't have 1st place.
Jack: I lost to Bob, but I defeated Mary.
Mary: I am definitely not the last.
Bob: The people who lost to me are Suzi and Mary.
One of the players is telling a lie. You need to find the liar and the real score.
The trick is, you have to assume that each of the person is a liar one by one.
For example, if you assume Suzi is the liar, then everyone else is telling the truth. Therefore, you must look if there is any contradiction. To make the long story short, the liar is Bob, and their rank is: 1st Bob, 2nd Jack, 3rd Mary, 4th Suzi.
More here: http://www.folj.com/puzzles/
For example:
Suzi, Jack, Mary, and Bob were playing mah-jong. By the end of the game, the four players came 1st, 2nd, 3rd, and 4th. However, someone lost the score paper and nobody knows the score now. So, the judge asked each of the players what they remember:
Suzi: I didn't have 1st place.
Jack: I lost to Bob, but I defeated Mary.
Mary: I am definitely not the last.
Bob: The people who lost to me are Suzi and Mary.
One of the players is telling a lie. You need to find the liar and the real score.
The trick is, you have to assume that each of the person is a liar one by one.
For example, if you assume Suzi is the liar, then everyone else is telling the truth. Therefore, you must look if there is any contradiction. To make the long story short, the liar is Bob, and their rank is: 1st Bob, 2nd Jack, 3rd Mary, 4th Suzi.
More here: http://www.folj.com/puzzles/