McGraw-Hill School Education Group has many its education applications on the iPhone / iPod Touch / iPad for FREE (normally $2 each) for a limited time. Deal expires September 26, 2011.

• Everyday Mathematics Addition Top-It: practice and reinforce basic addition facts (0 to 10 addition game)
• Everyday Mathematics Monster Squeeze: practice number line concepts and number comparisons
• Everyday Mathematics Equivalent Fractions: practice and reinforce fraction concepts and relationships
• Everyday Mathematics Beat the Computer: practice and reinforce basic multiplication facts (0-10 multiplication game)
• Everyday Mathematics Divisibility Dash: practice recognizing multiples of a number and applying divisibility tests
• K-12 eFlashcards: quick and easy way to study your key vocabulary terms for a variety of titles.