This cassette is supposedly designed to reinforce 'the understanding of equivalent fractions'. I have my doubts.
You can't select the levels of difficulty. You're simply presented with a problem involving mixed numbers to add, subtract, multiply or divide, with a prompt to tell you how to answer the particular part of the problem posed. This takes the form of YELLOW times GREEN plus WHITE and the numbers of the problem are coloured accordingly.
At first glance this may seem a good idea. But maths is about understanding, not about learning rules, and this program does little to encourage such understanding.
You also have to progress along this same path for each part of the problem. There is no facility to go straight to a right answer.
At the end of eight problems you can play Nim or Tower Of Hanoi.