Lesson objective: Count on from a number other than one.

This lesson helps to apply counting by tens (up to 100) to a real-world situation. Filled ten-frames are used here because they support the student in remembering the counting by tens sequence. This work develops students' understanding of the pattern of counting by tens.

Key Concept students will use:

- The number of objects in a collection is the same no matter how it is counted.

Skills students will use:

- counting to 100 by tens

Students engage in Mathematical Practice 7 (look for and make use of structure) as they use the structure in the counting sequence and apply that structure to counting by tens.

**Key vocabulary: **

- count
- ten-frame

**Special materials needed:**

- filled ten-frames