Choo-choo! Kids use a number line to solve three-digit subtraction problems in this fun-filled train game.

Solve a picture puzzle and practice math skills at the same time in this online puzzle showing our favorite Brainzy characters.

Puzzles are a great way to work on math skills like shapes and organizing -- and this online puzzle is a great tool for kids of all ages and skill levels.

Kids must piece together this artsy puzzle, featuring painter Floyd and his muse.

Kids learn all about taking away in this interactive puzzle with a subtraction image.

Ice cream time! Kids explore numbers 0 to 10 in this sweet math puzzle.

It's a number conga line! Kids flex cognitive skills and learn numbers with this puzzle.

With four levels of difficulty, this online jigsaw puzzle is a great brain-teaser for students of any age.

All aboard! Kids solve addition problems on a number line using 1, 10, and 100 unit manipulatives.

Muggo needs to be fixed! Kids must use shapes to fill in a shark puzzle in this game.

Learn to spot patterns in numbers with this fun puzzle quiz. Figure out which number comes next in the pattern!

In this free-form exercise, kids can place pretty items in a patterned sequence.

Kids must compose a square from smaller shapes in this tangram game.

In this matching game, first graders look at subtraction facts that are missing factors.

It's a bird ... it's a plane! Kids practice putting shapes together with this tangram.

Kids move tangrams into the correct positions to create a target shape.