Counting on a Rekenrek

This Fluency Activity is a part of the Lesson 11, Unit 5, Grade K. Encourage students to show teen numbers in both horizontal (e.g., 13 as 10 on the top row and 3 on the bottom) and vertical (e.g., 13 as 10 red and 3 white) orientations. Students might also show numbers in 2 parts (e.g., 5 as 3 and 2).