Elementary Mathematics


Common Core-


Leadership and Learning Center

a division of Houghton Mifflin Harcourt, we ask ourselves daily, “What do students need, what do teachers need, and what do school leaders need?” In doing so, we have developed research-based solutions to respond to those needs.
The Center’s ground-breaking work in 90/90/90 Schools℠ across the country (90% poverty, 90% minority, and 90% of students meeting or exceeding standards) identified essential practices that create positive associations between educational performance and sustained educational excellence! Brouchure

100's Charts
Splat Square -This is an interactive 100’s board. When you touch a number a splat appears on top of that number. When touched again the splat disappears. Can be used to count by 1’s, 5’s, 10’s or backwards. (Source: Oswego City School District)

Online Dictionaries:

On-line dictionary
Hartcourt Glossary for grades K-6
Math Dictionary for Kids

I Have Who Has Activities mathwire.com