Prealgbra & Geometry: Math You Can Play, #4
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About this ebook
Prealgebra & Geometry features 41 kid-tested games, offering a variety of challenges for students in 4–9th grades and beyond. Prepare students for high school math by playing with positive and negative integers, number properties, mixed operations, algebraic functions, coordinate geometry, and more.
A true understanding of mathematics requires more than the ability to memorize procedures. This book helps your children learn to think mathematically, giving them a strong foundation for future learning.
Chapters include:
- Number Properties: Master factors, multiples, prime numbers, and logical deduction.
- Integers: Explore the workings of positive and negative numbers.
- Operations and Functions: Stretch your mental muscles with games that require algebraic thinking.
- Geometry: Play around with area, perimeter, coordinate graphing, and more.
Math games pump up mental muscle, reduce the fear of failure, and generate a positive attitude toward mathematics. Through playful interaction, games strengthen a child's intuitive understanding of numbers and build problem-solving strategies. Mastering a math game can be hard work, but kids do it willingly because it is fun.
So what are you waiting for? Clear off a table, grab a deck of cards, and let's play some math!
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Book preview
Prealgbra & Geometry - Denise Gaskins
Math You Can Play Series
Book Four
Prealgebra & Geometry
Math Games for Middle School
Fourth to Ninth Grade
Denise Gaskins
Copyright © 2021 Denise Gaskins
All rights reserved.
Ebook Version 1.0
Tabletop Academy Press
tabletopacademy.net
Readers Love Denise’s Playful Math Books
"These games are great for using and practicing maths skills in a context in which there is some real motivation to do so. I love how they provide opportunities to explore a wide variety of approaches, including number bonds and logical thinking.
My children are always pleased, even excited, when I suggest one of these games. Sometimes they even ask to play them unprompted!
—Miranda Jubb, online reader review
It revolutionized our homeschool this year.
—Caitlin Fitzpatrick Curley, My-Little-Poppies.com
"I have played several of these games with my son, and each one was met with delight on his part and the sharing of delightful conversation about numbers and thinking between us.
"I love what Gaskins has to say about working with your children as opposed to simply assigning them work to do. This sums up the philosophy that I try to keep forefront in our home.
Highly, highly recommended.
—Amy, Hope Is the Word blog
Wonderful games for students. The author includes a link for printable gameboards, ensuring that I don’t spend more time making games than playing them. Variations for each game = SO many ways to explore numbers. You will love this book.
—Marisa, online reader review
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Contents
Title Page
Beginning
Sample Game: Hit Me
Preface to the Math You Can Play Series
Section I: A Strategy for Learning
Chapter 1: Teaching Math Through Play
Chapter 2: Gather Your Game Supplies
Section II: Prealgebra and Geometry Games
Chapter 3: Number Properties
Chapter 4: Integers
Chapter 5: Operations and Functions
Chapter 6: Geometry
Section III: Playing to Learn Math
Chapter 7: More Than One Way to Solve It
Conclusion: Algebra Tells a Story
Section IV: Resources and References
About the Author
Game-Playing Basics, From Set-Up to Endgame
A Few of My Favorite Resources
Quotes and Reference Links
Copyright and Credits
You can think of puzzles and games
as the sugar that helps the medicine to go down,
and you’re at least a bit healthier in your approach to math.
But even better than sugar and nasty medicine
is food that’s delicious enough
to take away our craving for sugar
and nutritious enough
to take away any need for medicine.
Over time, perhaps
you can find the sweetness
in the math itself —
in a problem that inspires you
to work and struggle,
until you finally get it,
just for your own satisfaction.
Good problems can help us fall in love with math
and make a delicious meal of it,
sinking our teeth into tough problems,
tenderized by their intrigue.
—Sue VanHattum
Sample Game: Hit Me
Math Concepts: integer addition, absolute value.
Players: two or more.
Equipment: playing cards (two decks may be needed for a large group).
How to Play
Aces count as one, and face cards as ten. Choose one player as dealer. Agree on which color represents negative numbers. At our house, we play with accounting colors: Black cards are positive numbers, and red cards count as negative. But some families like to use the electrician’s standard that red is positive, black negative.
The dealer gives each player one card face down and then turns one card face up beside each face-down card. Players do not pick up their cards. You may peek at your own face-down card as often as you like, but keep it hidden from the other players until the end of the round. The face-up card remains visible to all players.
Mentally add the numbers on your cards, taking into account both positive and negative integers. Your sum may go below zero.
When all players have had time to check their cards, the dealer asks each in turn whether they want a hit — an extra card dealt face up so everyone can see it. If you want the extra card, say Hit me!
Add your new card to your running total, but don’t say your sum out loud.
Last of all, the dealer may take a hit.
Then each player can ask for a second hit, and then a third, up to five hits (for a maximum of seven cards). Players may hold — stick with the cards they have — at any time, but they may not change their minds later and ask for a hit. The round ends when all players have either held or taken a total of seven cards.
At the end of the round, players turn their hidden cards face up and announce their scores.
The player with the lowest absolute value — the sum closest to zero, whether positive or negative — wins the round and becomes the new dealer. In case of a tie, the dealer hands the deck to any player who hasn’t dealt recently.
Variations
Do you hate relying on luck? Add a bit of strategy to the game by allowing the ace to count as one or eleven, player’s choice.
The dealer could allow each player to take his or her hits all at once, then move to the next player. But with my students, that system allowed children too much idle time between turns.
Words to Know
Integers are the positive and negative whole numbers, plus zero. Zero is neither positive nor negative, but a neutral point between the two. Absolute value is always positive, because it measures only the magnitude (distance from zero), not the direction.
History
My son’s all-time favorite math game, Hit Me is a variation on the traditional gambling game Blackjack, in which players aim for twenty-one points. I originally called the game Zero, but my kids refused to acknowledge such a boring name.
I am often surprised at the score it takes to win a hand of Hit Me. If I have a sum of three or more, I almost always lose, unless I take another card. If I take the maximum number of hits, however, that is a sign of desperation. I remember one game when all the red cards came my way, for a total score of −37, as I kept trying without luck for at least one black number — and my math students laughed and cheered at every hit I took.
Preface to the Math You Can Play Series
The playful, puzzle-solving side of math has always attracted me. In elementary school, calculations were a tedious chore, but word problems provided the opportunity to try out my deductive powers. High school algebra and geometry were exercises in logical reasoning, and college physics was one story problem after another — great fun!
As my children grew, I wanted to share this attitude of mathematical play with them, but the mundane busyness of everyday life kept pushing aside my good intentions. Determined to make it happen, I found a way to defeat procrastination: invite friends to bring their kids over for a math playdate. We grappled with problems, solved puzzles, and shared games. Skeptical at first, the children soon looked forward to math club. When that gang moved on, their younger siblings came to play, and others after them. Sometimes we met weekly, sometimes monthly or just off and on. At our house, at the library, in the park — over two decades of playing math with kids.
Now I’ve gathered our favorite math club games into these Math You Can Play books. They are simple to learn, easy to set up, and quick to play, so even the busiest parents can build their children’s mental math skills and promote logical thinking.
I hope you enjoy these games as much as we have. If you have any questions, I would love to hear from you.
—Denise Gaskins
LetsPlayMath@gmail.com
P.S.: If you’ve read the Math You Can Play books in order, you’ll notice that I repeat myself in Section I and in the back-of-book reference section. I’m including the game set-up information and teaching tips in each book to make sure they can all stand on their own.
Besides, it’s far too easy for us adults to fall back on the expectation that our children should learn the same way we were taught. Those teaching math through play
tips in the first chapter are worth reading more than once.
Section I
A Strategy for Learning
Chapter 1: Teaching Math Through Play
Chapter 2: Gather Your Game Supplies
Chapter 1
Teaching Math Through Play
There should be no element of slavery in learning. Enforced exercise does no harm to the body, but enforced learning will not stay in the mind. So avoid compulsion, and let your children’s lessons take the form of play.
—Plato
If a perfect teacher developed the ideal teaching strategy, what would it be like?
• An ideal teaching strategy would have to be flexible, working in a variety of situations with students of all ages.
• It would promote true understanding and reasoning skills, not mere regurgitation of facts.
• It would prepare children to learn on their own.
• Surely the ideal teaching strategy would be enjoyable, perhaps even so much fun that the students don’t realize they are learning.
• And it would be simple enough that imperfect teachers could use it, too.
This is idle speculation. No teaching strategy works with every student in every subject. But for math, at least, there is a wonderful way to stimulate our children’s number and geometry skills while encouraging them to think: We can play games.
Math games push students to develop a creatively logical approach to solving problems. When children play games, they build reasoning skills that will help them throughout their lives. In the stress-free struggle of a game, players learn to analyze situations and draw conclusions. They must consider their options, change their plans in reaction to another player’s moves, and look for the less obvious solutions in order to outwit their opponents.
Even more important, games help children learn to enjoy the challenge of thinking hard. Students willingly practice far more arithmetic than they would suffer through on a workbook page. Their vocabulary grows as they discuss options and strategies with their fellow players. Because their attention is focused on their next move, they don’t notice how much they are learning.
And games are good medicine for math anxiety. Everyone knows it takes time to master the fine points of a game, so children can make mistakes or get stuck
without losing face.
If your child feels discouraged or has an I can’t do it
attitude toward math, try taking him off the textbooks for a while. Feed him a strict diet of games, and his eyes will soon regain their sparkle. Children love beating a parent at a math game. And if you’re like me, your kids will win more often than you’ll want to admit.
Math You Can Play
Clear off a table, find a deck of cards, and you’re ready to enjoy some math. Most of the games in this book take only a few minutes to play, so they fit into your most hectic days.
In three decades of teaching, I’ve noticed that flexibility with mental calculation is one of the best predictors of success in high school math and beyond. So the Math You Can Play games stretch your children’s ability to manipulate numbers in their heads. But unlike the typical computerized flash card
games online, most of these encourage your children to think strategically, to compare different options in choosing their moves.
Be careful! There are a lot of useless games out there,
says math professor and blogger John Golden. "Look for problem solving, the need for strategy, and math content.
The best games offer equal opportunity (or nearly so) to all your students. Games that require computational speed to be successful will disenfranchise instead of engage your students who need the game the most.
Each book in the Math You Can Play series features twenty or more of my favorite math games, offering a variety of challenges for all ages. If you are a parent, these games provide opportunities to enjoy quality time with your children. If you are a classroom teacher, use the games as warm-ups and learning center activities or for a relaxing review day at the end of a term. If you are a tutor or homeschooler, make games a regular feature in your lesson plans to build your students’ mental math skills.
Know that my division of these games by grade level is inherently arbitrary. Children may eagerly play a game with advanced concepts if the fun of the challenge outweighs the work involved. Second- or third-grade students can enjoy some of the games in the prealgebra book. On the other hand, don’t worry that a game is too easy for your students, as long as they find it interesting. Even college students enjoy a round of Farkle (in the addition book) or Wild and Crazy Eights (a childhood classic from the counting book). An easy game lets the players focus most of their attention on the logic of strategy.
As Peggy Kaye, author of Games for Math, writes: Children learn more math and enjoy math more if they play games that are a little too easy rather than a little too hard.
Games give children a meaningful context in which to ponder and manipulate numbers, shapes, and patterns, so they help players of all skill levels learn together. As children play, they exchange ideas and insights.
Games can allow children to operate at different levels of thinking and to learn from each other,
says education researcher Jenni Way. "In a group of children playing