Lesson: Making 17, 18, and 19 Mathematics • First Year of Primary School

Students will be able to

• use models to represent the numbers 17, 18, and 19,
• describe the numbers 17, 18, and 19 in terms of 10 ones and 7, 8, or 9 more ones,
• solve problems where it is necessary to know how to decompose 17, 18, or 19 into 10 ones and some more ones.