Would it surprise you to learn that fish and birds count in pretty much the same way that we do? And that infants can do math? Our animal brains deal with quantities in very specific ways, from quick counts of a few dots to how we...

Learn how to compare two-digit numbers using less than, greater than, and equal to symbols. Understand the role of the tens and ones places in determining which number is larger or smaller.



Understanding Value, Base 10 and...