I love to do them with my 10 year old fifth grader, and we both enjoy it.
I am sure that working the problems in this book helped increase my problem solving skills - in a different and more general way than I was learning in school.
I greatly enjoy mathematical puzzles and brain teasers and regularly look for good puzzle books out there.
These are challenging! They remind me of puzzles my Soviet-born dad tests me with ;)Published 5 days ago by Y. Shuster
So much fun! My family loves solving these math problems, puzzles, and brain teasers. Getting this book in the US is the best part of the end of the cold war!Published 12 days ago by Friendly Giant
This is a great puzzle book and it really helps you think well and the puzzles are funPublished 22 days ago by ACE
If you love Martin Gardner's puzzles, you'll love these too. Be prepared to to beaten.Published 1 month ago by Robert Thomas Macrery