Addition: extended form

Adding two number using an extended form, as is often done in the early grades. Solving this problem is very similar to how it’s done with pencil and paper, so students will immediately know what to do.

Note how the student receives immediate feedback in the form of progress, hints and error feedback.

Solution mode

Every interaction has a review mode which shows the student’s work for review and a solution mode which displays the worked solution.

Column subtraction

A subtraction problem where students can choose their approach: an extended form or a short form with borrowing.

Solution mode