You want to cut a tortilla into 8 pieces. What's the minimum number of cuts you need to make? Is it statistically harder to guess an iPhone password that uses 3-digits or one that uses 4 unique digits? Two friends agree to meet up in a bar between midnight and 1 am. Each arrives at a random time and will wait 10 minutes for the other to show before leaving. What is the probability the two will meet at the bar? What if they are playing strategically? The YouTube channel and blog Mind Your Decisions has millions of views for math videos and posts. This book is a compilation of 70 of the best puzzles, divided into 25 classic puzzles in counting and geometry, 25 probability puzzles, and 20 game theory puzzles.

Find out about how maths could help you rescue someone in deadly peril, how not to shoot yourself with a cannon, and meet famous mathematicians who were really hard. And watch out for One Finger Jimmy, Chainsaw Charlie and their gangster friends, who are living proof that maths can be murderous.

Abacus Mind Math Instruction Book Level 1 (for teachers and parents): Goal for Level - 1 Addition - without carryover problems Subtraction - without borrowing problems Topics covered: Basics of abacus How to do mind math How to do dictation 5 exchange concepts explained in detail with examples Skill building activities explained Instruction book includes: Examples for each concept with detailed pictures and steps by step instruction on how to calculate and what to tell your students while teaching. Theory behind the formulas explained in simple terms. Over 380 sample problems for teachers and parents to practice the concepts. These sample problems can be used to introduce your child to the concept with effortless ease. Instruction on how to effectively introduce children to mind math with ways to build the skill. Dictation - a very important aspect of abacus training is explained with useful ideas to achieve. Skill building activities are explained that help you train your child. Common mistakes made by students with ways to help them avoid making these mistakes are outlined. Corresponding practice work for children is given in the two workbooks that are sold separately under the following titles. " Abacus Mind Math Level 1 Workbook 1: Excel at Mind Math with Soroban, a Japanese Abacus Abacus Mind Math Level 1 Workbook 2: Excel at Mind Math with Soroban, a Japanese Abacus " Soroban, the Japanese abacus is a very useful visual tool that helps children 'see' numbers as beads while calculating. Soroban perfectly fits with the base 10 number system used at present and provides a systematic method (formulas) to follow while calculating both on the tool and in the mind. Mastering of this tool will enhance your child's basic math comprehension, speed and accuracy. In general, when children practice mind math, they get a very important sense of achievement that helps raise their confidence as students. You can also see an improvement in their concentration, tenacity, memory power and listening skills.

Get better at maths and numbers by realizing which math skills you already use in daily life, and learn new ones while having fun. Did you realize how much maths you are already using when playing computer games, planning a journey, or baking a cake? This ebook shows how to expand the knowledge you've already got, how your brain works things out, and how you can get even better at all sorts of maths. Explore amazing algebra, puzzling primes, super sequences, and special shapes. Challenge yourself with quizzes to answer, puzzles to solve, codes to crack, and geometrical illusions to inspire you, and meet the big names and even bigger brains who made mathematical history, such as Pythagoras, Grace Hopper, and Alan Turing. Whether you're a maths mastermind, numbers nerd, or completely clueless with calculations, train your brain to come out on top. This essential ebook explains the basic ideas behind maths, to give young readers greater confidence in their own ability to handle numbers and mathematical problems, and puts the ideas in context to help children understand why maths really is useful and even exciting! Fun, cartoon-style illustrations help introduce the concepts and demystify the maths.

Brain Academy includes 18 multi-stage problem-solving activities focuses on problem solving and reasoning, developing thinking, collaboration and communication skills. This brand new range of challenges will encourage your pupils to explore topics from the new Programme of Study for mathematics in hilarious contexts, applying their skills and consolidating and extending their learning as they help the Brain Academy team of agents complete their missions.

Engineering professor Barbara Oakley knows firsthand how it feels to struggle with math. In her book, she offers you the tools needed to get a better grasp of that intimidating but inescapable field.

Perfect for anyone young or old looking to sharpen their mental math skills, these fast and fun puzzles are designed to rejuvenate and stimulate the mind. A range of difficulty levels--from beginner to advanced--are included, making this a suitable collection for all ages and abilities. With puzzles that include simple addition and substraction as well as more challenging problems involving percentages, fractions, and square roots, these are the ultimate brain-training tools for people on the go and anyone who wants to expand their mental agility.