Count by Twos and Fives

Students start counting by fives in lesson forty-eight.  

The process is:  

• Students count by looking at a display that shows a repeated pattern from five to fifty. 
• The teacher models counting and shows students the pattern by touching and saying two numbers in a row, then pauses to show the next two numbers.  
• The pacing helps students to learn that the first number ends with five and the second is the following tens number. 
• Once students get into the practice of counting by five to fifty, the teacher systematically removes numbers from the display until students count without seeing the numbers. 
• Later students start in the middle of the sequence and count to fifty. 
• The sequence is then extended to 100. 
• Students count from a specified fives number to another fives number. For example, they start with fifty-five and count by five to ninety-five. 

Students start counting by twos in lesson ninety-three. The exercise progression is similar to counting by fives.