Here is a decent presentation for very young mathematicians on place value. The tens and ones column are covered. This PowerPoint would be useful as a starter. After viewing this, I would break out the manipulatives and let kids use...

Using examples of numbers less than one hundred, this presentation in Spanish provides a visual representation of arrays. It would be a great way to help learners understand the concept of tens and ones.

Count along as a class! Each slide contains a number and objects to count, 1-20. The images are fun and as they reach 10+ are grouped by ones and tens. This resource could be used in a variety of ways, is well put together, and has fun...

Providing a step-by-step explanation of two-digit multiplication, a list of vocabulary words associated with this concept, and great examples, this resource would be a terrific classroom addition. Besides the set of of simple...