**Highlighting Ideas from ***Well Played: Building Mathematical Thinking Through Number Games and Puzzles, Grades K-2*** by Linda Dacey, Karen Gartland, & Jayne Bamford Lynch**

Math games and puzzles are a favorite part of math class for many students and teachers. But how can we create game-playing experiences that are mathematically meaningful as well as engaging and collaborative? *Well Played* is a book about just that. In it, Linda Dacey, Karen Gartland, and Jayne Bamford Lynch introduce us not only to a collection of well-choosen and fun math games, but also to explicit strategies and tips for getting the most out of each and every math game and puzzle we use.

Each math game and puzzle includes a detailed explanation of the math in each game, what to look for as students play, variations to extend or support game players and exit questions designed to help you assess how students are making meaning in the games and puzzles.

In today’s blog, we’re highlighting three of our favorite games and puzzles in *Well Played, Grades K-2*. You can click on the link for each game or puzzle to download a full description and materials to play.

## Triangle Totals

*Why This Puzzle?*

While many of us are familiar with playing games in math class, math puzzles are another way to get kids talking and reasoning about important mathematical ideas. *Triangle Totals* puzzles are a classic activity that requires puzzlers to arrange a given set of numbers in a triangle so that the sum of the numbers on each side of the triangle is the same. Solving these puzzles can be challenging and requires perseverance. Though students may begin with a random approach, they soon learn from incorrect guesses and use approaches grounded in number sense (such as not putting the three greatest numbers on one side).

*Math Focus *

- Finding totals of three numbers
- Understanding that you can add three numbers in any order
- Guessing and checking to solve problems

*What to Look For*

- Do students appear to guess randomly or organize their guesses in some way?
- Do you observe a conversation or decision-making process that you think should be shared with others?
- What strategies are students using to find the total of three numbers?

## Move Along

*Why This Game?*

*Move Along* focuses on subtraction with facts to ten, allowing students an opportunity to practice and talk about subtraction strategies as they move towards fluency. In this game teams try to move their game pieces along the path on the game board until they reach the Home space. On each turn, players draw two number cards and subtract each from ten. If at least one of the differences is listed in the next space, the team may move its game piece forward to that space.

*Math Focus*

- Finding differences
- Deciding which number to subtract to get a given difference

*What to Look For*

- Do partners randomly choose a number to subtract or recognize a choice that will allow them to move their game piece forward?
- What subtraction strategies do students use?

## It’s Greater

*Why This Game?*

Developing students’ understanding of addition and subtraction, rather than having them merely apply rote procedures, is a complex goal. To achieve this goal, we must offer our students many opportunities to discuss their strategies. In this game students draw cards randomly and write each number in an empty space on the* It’s Greater* game board. The spaces represent digits in two-digit numbers, with expressions involving addition and subtraction. The goal is to have all sums and differences be as great as possible. In deciding where to write digits, therefore, players must think about the kind of numbers that will result in the greater sums and differences.

*Math Focus*

- Adding and subtracting two-digit numbers
- Understanding where to place digits in addition or subtraction expressions to get greater sums or differences

*What to Look For*

- What evidence is there that students plan ahead when they discuss where to write a number
- What strategies do students use when choosing where to write a number?

## Play More!

Are you interested in even more math play? Well Played has twenty-five games and puzzles, focusing on counting and order, base ten numeration, addition and subtraction for grades K-2. You can read more about Well Played on our website, including a free preview of the book. And stay tuned for our upcoming blogs about Well Played, 3-5 and Well Played, 6-8.

Until next time, may your Monday be mathematically marvelous!