Lesson objective: Apply knowledge of ways to name numbers.

This lesson provides an opportunity for students to apply their knowledge and understanding of naming numbers to a mathematical situation. Students are asked to help the teacher complete her set of game cards by coming up with equivalent names for numbers.

Key Concept students will use:

- Representing a whole number in different ways (including base ten numerals, number-names, and expanded form) does not change its value.

Skills students will use:

- Understand that the three digits of a three-digit number represent the amount of hundreds, tens, and ones (Grade 2, Unit 6)
- Write three-digit numbers in expanded form
- Write three-digit numbers in word form
- Write three-digit numbers in standard form

Students engage in Mathematical Practice 7 (Look for and make use of structure) as they look for patterns in the way we name numbers to name numbers they have not seen before.

**Key vocabulary: **

- expanded form
- standard form
- value
- word form

**Special materials needed:**

- base ten blocks
- place value mat (optional)