Logical Thinking
| ||||||
Logical Thinking | ||||||
| | | | | | |
 | |
| |
 |  | ||||||
 |  | ||||||
| | | | | | | |
| |||||||||||
| | | | ||||||||
| |
| |
 |
 |
 | ||||||||||
Each of the diagrams in this extensive collection poses an ingenious geometrical puzzle which has to be solved simply by looking, thinking and imagining. For instance, what would you see if you look further into that hollow cube? There is also a novel way to check if your solution or your ideas about the puzzle are correct. By making a model or a simple cut-out from the back of the book, you will be able to place it on the page and convince yourself or others that you are right! A most intriguing collection of puzzling notions. £3.95 (No VAT on this product) |
Match the Views This intriguing collection of puzzles all start from the same simple idea, that of cutting and folding a square of paper marked with 25 smaller squares. You have to imagine the resulting shape in three-dimensions after making the given set of cuts and folds. Then to match it with one of nine given views. The paper is coloured differently on both sides and this provides further useful clues to help with visualising the possible solutions. £3.95 (NO VAT on this product | |||||||||||
Money Puzzles Although all of these puzzles are based on money they are set more at the level of shopping, costs and simple pay than high finance. That being said, they are excellent and thought-provoking puzzles and would make a fine addition to the repertoire of any teacher of mathematics. Simple numbers and sums of money are used throughout, the emphasis being always on common fallacies, misuse of percentages, misunderstandings and the need for lateral thinking. All the prices are in NZ dollars but can be presented just as easily in pounds, US dollars or euros. The puzzle lies in the concept, not in the currency. Thorough answers and explanations are given. £6.95 (No VAT on this product) | ||||||||||||
| | | | | | | | | | | | |
 |
 | |||||
 | ||||||
| | | | | | |
This book includes 34 coloured card dice to cut out and make. All are legal dice but they differ from each other in rather subtle ways. The primary puzzle is to identify which dice are identical and which are not. It is the logical thinking required to solve these puzzles which draws attention to the nature of the symmetries of three dimensional objects. Also included is an extensive minibook which deals with the fascinating consequences of differing symmetries in biological molecules. £4.95 (No VAT on this product) |
1000 Playthinks This magnificent collection of puzzles and brain teasers is presented in the form of a large spiral bound book. The illustrations are powerful and colourful and the puzzles are pleasing and ingenious. Any mathematics library, either private or communal would find this book a splendid resource to include. Not only are the puzzles themselves delightful and original but there are very clear and stimulating answers and explanations. £22.95 (NO VAT on this product) | These games have been chosen or adapted from games played all over the world. For each there is a photocopiable A4 sheet which gives the 'board' and the rules. Children then try to work out a winning or 'not losing' strategy within those rules. Later, they are encouraged to alter them and to explore the effect such changes have on the strategy of the game. Extensive teacher's notes are included. £6.50 (No VAT on this product) | ||||
| | | | | | |
 |
 |
 | ||||
| | | | | | |
The Number Detective This is an intriguing and original puzzle book where unknown numbers have to be identified by a series of cryptic clues. Logical thinking and systematic detective work is required and these puzzles offer a fine way to reinforce the meaning of mathematical words and to investigate and appreciate the ever fascinating properties of numbers. £4.95 (No VAT on this product) | Anyone looking for number puzzles to stretch and intrigue will be delighted with the contents of this original book. The demanding challenges explore the properties of numbers and the patterns and hidden relationships which exist between them. Many of the challenges are presented in a visual or diagrammatic way with tables or charts to complete or fill in. £4.95 (No VAT on this product) |
The Number Puzzler All the puzzles in this book take the form of number sequences and always some of the terms are missing. Sometimes the missing terms are at the end and the puzzle is to work out how the sequence continues. Sometimes there are gaps to fill within it. Logical thinking is needed to discover the hidden rules and the book systematically explains how to set about solving this intriguing type of puzzle. £4.95 (No VAT on this product) | ||||
| | | | | | |
 |
 |
 | ||||||||||
Who Tells the Truth? All the characters in these puzzles make clear statements about themselves and others, but it is not clear whether or not they are telling the truth. Anyone could be lying. As always, a good logical puzzle is one which it is possible to unravel by thinking logically. The problem is to decide which person to believe. Altogether there are 85 original puzzles in this book ranging in standard from fairly easy to quite demanding. There are also some curious paradoxical pictures which raise questions which are rather hard either to answer or to ignore. £3.99 (No VAT on this product) | ||||||||||||
Who Did It? Poster On this poster there are eight different puzzles, each featuring some red, yellow or blue tubmen. Each character makes a single statement, which may be true or false. The puzzle is to work out who is telling the truth. |
Which Number Comes Next? Number sequences come in many different forms and this poster is set out as a set of ingenious puzzles to solve. For each of the given sequences you have to spot what hidden rule has generated it so far and then work out what would come next. In a sense it is rather like code breaking and the skill is to develop sensible ways to attack each one in turn. Some hints and examples of the technique are given on the poster, as are all the answers in a simple code. The first eight puzzles are displayed in a form which is reminiscent of the pieces on a Scrabble Board. £3.53 (inc. VAT) | |||||||||||
| | | | | | | | | | | | |
| |
| |
| | ||||||
| | ||||||
| | | | | | | |
| |||||||||||
| | | | ||||||||
| |
| |
