## Lesson: Place Value to 100

Developing the Concept

By now your children should have a good understanding of place value for tens and ones. They should know that tens digits tell how many groups of ten there are, and the ones are the singles that are left over. Now that children have mastered this, they can start to compare and order two-digit numbers by comparing the tens digits and then the ones, to find which are greater or lesser. Then they can place the numbers in order from least to greatest.

**Materials:** connecting cubes

**Preparation:** none

**Prerequisite Skills and Concepts:** Children should understand the concept of tens and ones and number patterns through 100.

**Wrap-Up and Assessment Hints**

Learning the terminology for place value may be difficult for some children.
They need a lot of practice with and reinforcement of the terms as well as the concepts. Give your children as many chances as possible to practice using the terms and reading the numbers. The more place-value experiences they have, the better at understanding place value they will become. If children are having problems, allow them to use connecting cubes as often as they can, to model the numbers they are working with. This visual aid can help children see how the numbers compare or how they are built and what digits mean in different place-value positions.