To begin the lesson, call on several students to come to the front of the room and make a line. As you call them, use an ordinal number to name their place. For example, "Tom, you will be first. Susan, you will be second." Invite students to the front until you have fill the first through tenth positions. Then, dismiss those students, and repeat the same process with a different group of 10 students.
Now display a train of 10 connecting cubes made with as many different colors as possible. Indicate that the left-most cube is the first cube in the train. As you randomly point to different cubes in the train, call on students to name the position of the cube using ordinal numbers (first, second, third, and so on).
Next, put the students into pairs and distribute 15 or more connecting cubes to each student. Ask the students to sit back to back and have one student in each pair make a train of 10 cubes, using as many different colors as they can to make cars in the train. Then have the student who made the train describe it to his or her partner so that the partner can make an identical train. Then have the students switch roles. (The goal of this activity is to ensure that students are comfortable with ordinal numbers, as they will be used to describe patterns. You may wish to review this concept with those students who are not familiar with ordinal numbers.)
When students are ready, distribut the Pattern Templates activity sheet, which has a strip of 10 spaces along the top. (This sheet also has a flag pattern template, which will be used later.)
Ask students to circle the first square in black. Then have them color the other squares according to directions that you give. For example, "Color the third car red." When each square has been colored, call on students to name the colors of the cars as you randomly say ordinal numbers from 1st through 10th. You may wish to collect these papers as a first entry in a unit portfolio.
Finally, call the students together to sing Old MacDonald (see Song Lyrics for the words. Call on volunteers to indicate which animal will be named first, second, and so on. For example, "Meg, what will be the first animal? Peter, what will be the second animal?" To help students remember the order, you may wish to list the animals on the blackboard.