These games and books will provide ways to spend enjoyable time with your child and support mathematics learning. The age recommendations are only recommendations; you know your child and their mathematical reasoning skills. The primary goal here is enjoyment and any game that is fun for your child and you is worth playing.
Math Games
Dominoes
Ages: 4 and up
Domino games are a fun way to develop number sense, quick number recognition and knowledge of number combinations. There are many books that give directions for domino games, You can also make up your own. In school we play Domino Top It. Turn a set of dominoes face down on a table. Each player turns over one domino. The player with the greatest number of dots takes all the dominoes. You can play until all dominoes are gone and the player with the most dominoes wins.
Set
Age 7 and up.
This game involves making sets using attributes. There is a simplified version of this game to get started. It's a little complicated but lots of fun.
Pile It
Ages 4 and up
This quick family game involves sorting and quick visual recognition. It's a great game for children ages 4 to 7.
Ruckus
This game involves quick visual recognition of images and the scoring requires addition and subtraction. It's a fun game but it does move very quickly; if your child doesn't like fast moving games this may not be the game for your family.
Blink
A fast moving game of attributes.
Math Books
Greg Tang
Greg Tang writes math riddle books with wonderful illustrations. They promote thinking in groups and seeing groups of objects to facilitate counting. These are lots of fun and are interesting to students at all grade levels.
Cindy Neuschwander 
Cindy Neuschwander (author) and Wayne Geehan (illustrator) write a series of books with geometry themes. They have engaging stories and interesting mathematical ideas.
The Lemonade War
This chapter book by Jacqueline Davies tells the tale of a brother and sister battling over who can make the most money from lemonade stands. There are many mathematics connections here with figuring out costs and profits. And it's a great read. It can be a read alone for an older child or a read aloud with a younger child.
The Number Devil
This upper grade book is a mathematical puzzle rolled into a novel. Each night a devil appears and gives Robert a math problem to solve. A great mix of reading and mathematics!
The Amazon reviewer describes it
Young Robert's dreams have taken a decided turn for the weird. Instead
of falling down holes and such, he's visiting a bizarre magical land of
number tricks with the number devil as his host. Starting at one and
adding zero and all the rest of the numbers, Robert and the number
devil use giant furry calculators, piles of coconuts, and endlessly
scrolling paper to introduce basic concepts of numeracy, from
interesting number sequences to exponents to matrices. Author Hans
Magnus Enzensberger's dry humor and sense of wonder will keep you and
your kids entranced while you learn (shhh!) mathematical principles.
Who could resist the little red guy who calls prime numbers "prima
donnas," irrational numbers "unreasonable," and roots "rutabagas"? Not
that the number devil is without his devilish qualities. He loses his
temper when Robert looks for the easy way out of a number puzzle or
dismisses math as boring and useless. "What do you expect?" he asks.
"I'm the number devil, not Santa Claus." (Ages 10 to adult) --Therese LittletonIf you have a comment on a game or book on this page or a question, email Julia Hendrix, Elementary Mathematics Specialist, at jhendrix@sch.ci.lexington.ma.us