From iPad Apps for School:
"Marble Math is a fun mathematics game for kids to play on their iPads. The game has students practice basic multiplication problems through a maze layout. Students are given multiplication problems to solve by rolling their marbles through mazes that contain the correct answers. Students have to avoid the incorrect answers while moving their marbles toward the correct answers. Some of the mazes contain additional obstacles to avoid while searching for the correct answer. Students earn points for each maze they solve. When they reach 2,000 points (ten-fifteen correctly solved mazes) students earn a new marble."
From Red Jumper (app developer):
"The simple way to create beautiful books on your iPad. Read them in iBooks, send them to your friends, or submit them to Apple's iBookstore."
Great list of technology resources to use in flipping your classroom.
"The use of technology in a flipped classroom should never be regarded as a supplicant of the teacher but only a complimentary element that increases students
From Educreations:
"Educreations is a recordable interactive whiteboard that captures your voice and handwriting to produce amazing video lessons that you can share online. Students and colleagues can replay your lessons in any web browser, or from within our app on their iPads. Check out the "Showcase" on our homepage or the "Featured" tab in our iPad app to view some great lessons that other teachers have created with Educreations."
From Dynamic Geometry (app developer):
"Drag, manipulate and animate visual mathematical representations to develop your understanding of fundamental concepts across elementary mathematics, geometry, algebra, trigonometry, calculus, and beyond. Based on the award-winning software The Geometer's Sketchpad®, the Sketchpad Explorer app allows you to interact with, and investigate, any mathematical document created in Sketchpad. With a simple, powerful, multitouch interface, Sketchpad Explorer puts mathematics comprehension literally at your fingertips."
From Apple App Store:
"With Numerosity, children will experiment with numbers and operations to develop their creativity with math. They'll move numbers around, dragging them into different positions to perform different operations so as to discover the rules of math on their own at their own pace."
Excellent article about 6th grade math students using iPads, along with Explain Everything and Book Creator apps, to produce "iBooks on solving One-Step Equations."