Mathematics, or more colloquially, "math", is one of the most important subjects that students learn in school. Not only do good mathematical skills form a necessary for understanding of other subjects, especially the sciences, but also, math is an important life skill.
As you can imagine, this can be a lot of fun, and before you know it students can forget they are learning math! What is more, teachers can also easily vary the game play, for example, by using different types of math problems, or perhaps even by asking members of the class to solve each problem before moving on to the next bingo call.
When you're teaching your student to write, there are a whole host of worksheets online that you can use. Many of these include clipart that will help the students learn the sounds of letters and letter combinations. There are other sheets that help the student learn to write his or her numbers. It's helpful having printable worksheets for something like this, because parents often go through quite a few of these before the child masters writing the numbers or letters correctly.
In math bingo, each student is given a bingo card (also known as a "bingo worksheet" or "bingo board") printed with numbers. These aren't necessarily the standard bingo numbers, but rather are the answers to a number of different math problems.