This Problem Set is a part of the Lesson 4, Unit 5, Grade K. In this lesson, students continue to work with numbers 11-19 to gain foundations for place value. Using linking cubes, they work with a partner to count their fingers to discover 10 ones and some ones to 19. Students then practice counting these ones the Say Ten way (e.g., ten one, ten two, ten three, ten four, ten five, ten six, ten seven, ten eight, ten nine, 2 ten).