This is an entire comma unit consisting of 10 of the most common comma rule. Each rule is defined with examples. Following the examples are some practices exercises (usually 10) that can supplement book work. Also included are two tests. One that can be used after 4 rules and one for after 10 rules. This is a 13-page document. Depending on how many rules you cover in a day and any additional practice, this will probably take at least a week (probably more) to complete.