The number line gives a visual representation of counting. Number lines should contain all the numbers in order, including the odd numbers. Students will see that only the even numbers are being counted. Have students speak numbers aloud as they see them on the number line. Alternatively, call students up one at a time to point to the numbers as they say them. This tool gives students a visual reference for this abstract concept.
Songs and poems give students a mental tool for recalling the order in which numbers are counted. Simple rhymes and familiar tunes work best. For example, the simple chant, "Two, four, six, eight! Who do we appreciate?" can be used to aid students in learning to count by twos. Additionally, look for CDs and sing-along videos that focus on counting by twos.
Games engage children in the subject and help them learn how to count by twos in an unforced way. Use a basketball hoop to show children how to count points by two. Let children shoot baskets and keep score on a large sheet of paper. Each time a student scores a basket, write the new score. Manipulatives also help children learn how to count by twos by giving them a concrete object to touch while counting. Use beans, pennies or any small object for counting. Students will see that they are actually counting two things when counting by twos.
Some students learn best through writing. Worksheets can vary depending on what level the students are at with their counting. Fill-in-the-blank questions give students a chance to fill in the missing numbers in order. Dot-to-dot pictures, in which all dots are numbered with even numbers, give extra practice in skip counting. Any worksheets in which students must practice their counting skills will be beneficial.