Livros de desafios: sudoku, lógica, palavras e matemática

12 Puzzle Types · 200+ Puzzles · Ages 8-12

Twelve puzzle mechanics. One giant book. Zero screens. From arithmetic mazes to honeycomb deduction rings, every chapter teaches one mechanic with a solved example, then builds it up puzzle by puzzle — mazes, snakes, pyramids, number machines, grid flows, crossings, crosswords, number fits, fact-family hexagons, secret codes, shape equations and marked-ring deduction. The GRAND MIX finale shuffles all twelve: no new rules, just everything at once. • 200+ puzzles across 12 mechanics, easy to challenging • Every chapter opens with How to play and a worked example • Every puzzle has exactly one solution — full answers at the back • Big write-in cells, large print, one shared clean layout • Ages 8-12 · grades 3-6 · 100% screen-free Each chapter comes from a full series by the same author — if one mechanic becomes the favorite, there is a whole book of it waiting.

10 Puzzle Types · 200+ Puzzles · Ages 6-9

Ten kinds of puzzles. One big book. Little mathematicians welcome. Made for ages 6-9: arithmetic mazes, snake chains, number pyramids, number machines, shape equations, fact-family hexagons and secret message riddles — each chapter teaches its game with a solved example, then grows one small step at a time. The last three chapters are Big Kid Challenges: growing room for when the first seven feel easy. And the Grand Mix finale shuffles the young seven together — no new rules, just all of them at once. • 200+ puzzles across 10 mechanics, first-grade friendly • Every chapter opens with How to play and a worked example • Every puzzle has exactly one solution — full answers at the back • Big write-in cells, extra-large print, one clean layout • Ages 6-9 · grades 1-3 · 100% screen-free Each chapter comes from a full series by the same author — and when your child outgrows this book, the Big Book of Math Puzzles for Kids (Ages 8-12) is waiting.

10 Puzzle Types · 200+ Puzzles · Ages 10-13

Every puzzle in this book can be solved by pure logic — no guessing, ever. We test it. Ten deduction mechanics, ordered as a ramp: missing-brick pyramids, operator hunts, reverse number machines, cross math, four-op crosswords, big number fits, number locks, shape systems, logic grids and honeycomb rings. Every chapter opens with a solved example; the book opens with one promise, explained to the solver: if you're stuck, there is always a next step — find the cell that's forced. The Grand Mix finale shuffles all ten. • 200+ puzzles across 10 deduction mechanics — every one verified uniquely solvable • Chapters ramp from propagation warm-ups to pure-deduction capstones • Full solutions at the back, grouped by chapter • Big write-in cells, large print, one clean layout • Ages 10-13 · grades 5-8 · 100% screen-free Each chapter comes from a full series by the same author — and when the deduction habit sticks, the Kakuro Masters and Sudoku Masters Collections await.

240+ Logic Deduction Puzzles for Kids Ages 8-12 | Code-Breaking Brain Games, Grades 3-6

Can you crack the secret code? Every puzzle hides a secret code of different digits. Each clue is a wrong guess with three simple picture hints: a filled circle means a digit is right and in the right spot, a half circle means a digit is right but in the wrong spot, and a cross means nothing matches. Cross out what cannot be true, follow the trail of hints, and deduce the one and only answer. • 240+ pure-logic deduction puzzles, no guessing required • Three levels that grow from 3-digit to 5-digit codes • Every puzzle has exactly one answer, provable by elimination • Picture hints work in black and white — no color needed • Full solutions at the back Part of the Crack the Code for Kids series — real reasoning, screen-free.

90+ Decoding Puzzles for Kids Ages 7-10 | Addition, Subtraction and Times-Table Practice, Grades 2-4

Solve the sums to reveal the secret answer! Each puzzle is a riddle in disguise. Work out every arithmetic problem, look each answer up in the key to find its letter, then read the letters in order to uncover the answer to a fun riddle. When a letter appears twice, its two problems share the same answer — a built-in way to check your work. • 90+ decode-the-riddle puzzles across three levels • Add and subtract, times tables, then all four operations • 100 original kid-friendly riddles to uncover • A self-checking key makes every puzzle solvable • Full answers at the back Part of the Crack the Code for Kids series — playful classroom-ready practice.

220+ Cross-Number Grids for Kids Ages 7-9 | Grades 2-3 Mental Math Practice Workbook

Fill the grid so every row and column adds up! Each puzzle is a small cross-number grid: place the digits 1 to 9, each one exactly once, so every row (read left to right) and every column (read top to bottom) hits its target. Children build addition and subtraction fluency, careful reading order, and stick-with-it problem solving — one satisfying grid at a time. • 220+ cross-number grids across three step-up levels • Worked example plus a clear left-to-right rule • Full step-by-step solutions at the back • Large-print easy section, with room to pencil and erase • 100% screen-free — just a pencil Part of the Cross Math for Kids series — a friendly path to mental-math confidence.

220+ Cross-Number Grids for Kids Ages 9-11 | Grades 3-5 Times Table Practice Workbook

Multiply and divide your way across the grid! Every puzzle is a cross-number grid: place the digits 1 to 9, each one exactly once, so each row (left to right) and column (top to bottom) reaches its target. Divisions always come out even and every step stays a whole number, so young solvers strengthen times-table recall and division sense while they play. • 220+ cross-number grids across three step-up levels • Worked example and a clear left-to-right rule • Full step-by-step solutions at the back • Large-print easy section, with room to pencil and erase • 100% screen-free — just a pencil Part of the Cross Math for Kids series — a friendly path to mental-math confidence.

220+ Cross-Number Grids for Kids Ages 10-12 | Grades 4-6 Mixed Math Practice Workbook

All four operations, one clever grid! Each puzzle mixes addition, subtraction, multiplication and division in a single cross-number grid: place the digits 1 to 9, each one exactly once, so every row (left to right) and column (top to bottom) meets its target. Read strictly left to right — a great workout for flexible, confident mental math. • 220+ cross-number grids across three step-up levels • Worked example and a clear left-to-right rule • Full step-by-step solutions at the back • Large-print easy section, with room to pencil and erase • 100% screen-free — just a pencil Part of the Cross Math for Kids series — a friendly path to mental-math confidence.

85+ Maze Puzzles for Kids Ages 8-10 | Equivalent Fractions Practice Workbook, Grades 3-4

Turn equivalent fractions into a maze adventure! Each box shows a fraction; your child follows the connector that shows an equal fraction — the same value written a different way — all the way from START to FINISH. The book grows from finding a matching twin, to simplifying to lowest terms, to comparing two fractions with the signs less-than, greater-than and equals. • 85+ solve-and-follow maze puzzles • Three sections that build skill by skill • Full solutions at the back, path highlighted • Large, clear grids with real stacked fractions • 100% screen-free — just a pencil Part of the Fraction Mazes for Kids series — a playful path to fraction confidence.

85+ Maze Puzzles for Kids Ages 9-11 | Add and Subtract Fractions Practice Workbook, Grades 4-5

Add and subtract fractions the fun way! Solve the problem in each box, then step through the connector that shows your answer. The book builds gently, from the same denominator, to friendly denominators where one divides the other, to any denominators — answers always in lowest terms. • 85+ solve-and-follow maze puzzles • Three sections that build skill by skill • Full solutions at the back, path highlighted • Large, clear grids with real stacked fractions • 100% screen-free — just a pencil Part of the Fraction Mazes for Kids series — a playful path to fraction confidence.

85+ Maze Puzzles for Kids Ages 10-12 | Multiply and Divide Fractions Practice Workbook, Grades 5-6

Make multiplying and dividing fractions click! Solve the problem in each box and follow your answer to the next. Multiply a fraction by a whole number, then fraction by fraction, then divide — starting from counting unit fractions and moving to the invert-and-multiply rule. • 85+ solve-and-follow maze puzzles • Three sections that build skill by skill • Full solutions at the back, path highlighted • Large, clear grids with real stacked fractions • 100% screen-free — just a pencil Part of the Fraction Mazes for Kids series — a playful path to fraction confidence.