Without understanding the concept of multiplication, students won't grasp the meaning of multiples. Explain how multiplication is a short form of showing additions: for example, 2+2+2+2 equals 2---4, and if you add yet another 2 (2+2+2+2+2), it becomes 2---5. Afterward, clarify that multiples are numbers you get when you multiply a number (2 on this occasion) with another whole number (1, 2, 3, 4, 5, 6 and so forth).
Lecturing to students on a brand new topic can do little to help them. Instead, you must visualize the subject of multiples to help them understand it. Draw a grid containing all numbers between 1 and 100 and shade the multiples of each number. For example, for 2, shade the squares containing the numbers 2, 4, 6, 8, 10 and so forth. You can also create worksheets containing multiples grids for all numbers and distribute them to students.
Practicing multiples allows children to put their theory skills into practice. It also helps teachers evaluate each student's progress and focus more on children lagging behind. You can either assign individual classroom tasks, such as finding the multiples of 2 between 5 and 10 or coloring the boxes corresponding to multiples of 3 on a grid, or give more complicated assignments for homework, such as writing down the common multiples of 2 and 4 up to 20.
Classroom games can help students test their skills on multiples and also have a few fun moments with their classmates. Divide the class into two teams and ask them to find the odd numbers in a pool containing a certain number's multiples (for example, team leaders must consult their teammates and tell you that 5 is not a multiple of 2). Another group task can be to find which number multiples on the board belong to. You can also assign individual tasks, where, for example, students must write as many multiples of a number as they can within 20 seconds.