Learning fractions addition and subtraction visually is a great way to secure fractions numeracy
Fractions lend themselves to be taught online very well, enabling both tutor and tutee to colour in boxes, rub them out, add them up and simplify the answers.
Below is a screenshot from a recent tutorial I had with a Y3 child who has just begun to learn about fractions.
It is great to see a child suddenly understand that four eighths is the same as a half.
Often a couple of fractions tutorials BEFORE a child starts to learn fractions at school gives them a HUGE advantage in understanding the basics which will enable them to not only keep up with the class, but often to lead the class and the homework.