Esa Helttula

Same-Change Subtraction

Paid

This app can be used to teach and study subtraction using the same-change rule. The app is easy to use and it has an intuitive interactive...

Visual Multiplication Table

Paid

This app can be used to explore and learn the multiplication table in a visual way that increases intrinsic motivation. Wired.com: "I highly...

Partial Quotients Division

Paid

This math app can be used to teach and study the partial quotients division method. The app is easy to use and it has an intuitive interactive...

Decimal Rounding

Paid

This math app can be used to teach and study the rounding of decimals. You can set your own problems or solve random problems. The decimal numbers...

Long Division

Paid

The Long Division app has been featured by Apple in "New & Noteworthy", "Math - Numbers & Operations", and in "Math Apps for Middle School"....

Fraction Math

Paid

The Fraction Math app can be used to teach and study fractions by solving addition, subtraction, division and multiplication problems with...

Lattice Multiplication

Paid

This app can be used to teach and study the ancient lattice multiplication method. Solving lattice multiplication problems is also excellent times...