Riassunto
MATHadazzles Junior are intriguing number puzzles that sharpen solver’s logical reasoning and problem solving skills, and put to use knowledge of numbers and mathematical operations. A MATHadazzles Junior puzzle is a 2-by-3 grid with circles at the ends of the rows and the columns. Each number, 5, 6, 7, 8, 9 and 10 belongs in one of the 6 grid cells. Some grid cells have clues, given as equations or inequalities, that “describe” the numbers that will fill those cells. Use the clues and your reasoning skills to place numbers, 5 - 10, so that the numbers in rows and columns add to the circle sums at the ends of those rows and columns. To make the puzzles challenging, the grid cells have a clue or are empty and 3 or 4 of the circles are empty. We tell you what numbers are missing, but you have to figure out which cell or circle to place them in so that the cell numbers “add up!” Use addition, subtraction, multiplication, and division as well as greater than and less than symbols and n as an unknown value while solving the 78 MATHadazzles Junior problems. To give you a head start, the various types of equality, inequality, and unknown symbols are described with examples at the front of the book. Answers are at the back of the book. MATHadazzles Junior are arranged in order by level of difficulty from fairly easy to more challenging. Take the book everywhere you go. It fits easily into a pocket, shoulder or handbag, and backpack. Solve MATHadazzles Junior in the morning while eating breakfast – at mid-morning for a “thinking break” – after dinner for a “brainy dessert!” Enjoy!
Informazioni sull'autore
Carole Greenes is a leading mathematics educator and an avid mathematical problem solver and problem creator! Dr. Greenes is Professor of Mathematics Education and Director of the Practice, Research & Innovation in Mathematics Education (PRIME) Center at Arizona State University, and author of more than 300 books, articles and games about mathematics for students and teachers, Pre-Kindergarten – Grade 12, including Big Math for Little Kids, Zuplez, Groundworks Series (Algebra, Number, Measurement, Geometry, Probability & Statistics), Think Tanks, and Algebra Readiness Made Easy. She is also author of the online MATHgazines for middle and high school students, and editor of the Arizona Association of Teachers of Mathematics (AATM) online journal, OnCore. She was awarded the 2016 AATM Copper Apple award for leadership education and the 2011 Glen Gilbert/Ross Taylor Leadership Award from the National Council of Supervisors of Mathematics. In 2012, the PRIME Center won the Arizona Center for Afterschool Excellence award for Outstanding Afterschool Programs. In her “free time,” she writes mathematical musical mysteries which have been performed throughout the United States, writes children’s math story books, and solves crossword puzzles. Mary Cavanagh is a mathematics educator always drawn to games, brain teasers, cards, and magic. Dr. Cavanagh is Executive Director of the Practice, Research and Innovation in Mathematics Education (PRIME) Center and a Research Assistant Professor at Arizona State University and author of more than 250 books, including mathematics textbooks programs, math activity books, games, articles, and science activities for families including EnVisionMATH™, Grades K-6, Exploring Mathematics, Grades K-8, Math, Science & Beyond Grades K-6, Zap, Twang, Buzz, Algebra Readiness Made Easy, Grades K-7, Math to Know, Grades 3-4 and Math to Learn, Grades 1-2. She has taught all of the elementary grades as a classroom teacher and as a mathematics specialist and has conducted math workshops for teachers throughout the United States, Australia, Germany and Okinawa. Although most of her bets are limited to 25¢, she loves poker. In her ballroom dancing activities, she finds mathematics applications in terms of combinations of turns, angles & symmetry. She has used some of her science & magic for introductions and conclusions to dance routines. Her work on collections of puzzlers like MATHadazzles and MATHadazzles Junior is always a joy.
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