Here are a variety of online math game sites I have used over the years. Break is coming up for many districts. Maybe these can fill the void and allow some learning. Several address other content areas as well.
I have also used these games for break times at school to keep students working on academics.
If you have a child learning to count money, especially at an advanced age, there are some useful money games – especially ones with coins. I have students complete problems with actual coins then enter their response online.
Students can hit a road block at the steps that appear to be very simple. For example, in the problem below the students are prompted to find the highest point on the graph. Many think the graph refers to the entire coordinate plane and they pick 5 as the high point. It is the highest point on the y-axis but not the graph. I introduce the problem by highlighting the actual graph in pink and explain that this highlighted line is what is meant by the graph.
The use of color also helps students distinguish between the x and y axes and what the variables x and y represent in the context of the problem (# minutes and # kilometers in this problem) – see photo above. This problem also involves plugging in a # for x (blue) IN the function (red). In the photo below you see how I use color to help emphasize this.