3rd Graders, Here's a new page, just for you! 
In 3rd Grade, the focus in math is on developing an understanding of multiplication and division and strategies for multiplying and dividing within 100. Students are also developing an understanding of fractions, especially unit fractions (fractions with numerator 1). Students also form an understanding of the structure of rectangular arrays and of area. They are describing and analyzing two-dimensional shapes.
Here are some books, games, and activities just for you! Have fun practicing!
Glowla's Estimation Contraption
Who Wants to Be a Mathionaire?
Battleship Numberline: Fractions
Measurement Mania: US Customary
Thirteen Ways of Looking at a Half
"Amanda Bean's Amazing Dream" Book
"What Time Is It, Mr. Crocodile?" Book
Twenty-One Elephants and Still Standing
"One Hundred Hungry Ants" Book
"Sir Cumference and the Isle of Immeter" Book
"Grandfather Tang's Story" Book