40 eighth grade lessons in Project Share
Take the course, then you can copy for your lessons.
Free lessons and apps
These are for grades K-5. (They are aligned to the Common Core, so you will have to judge which content matches your TEKS needs).
Interactive Math Glossary
Provided by the TEA to help teachers explore and understand mathematics vocabulary used in the grades K – 8 TEKS
TASA on iTunes U
TASA on iTunes U® is a library of digital resource collections, organized by course, that make it easier for teachers to include digital learning.
This is one of the best collections of mathematics teaching resources on the web for Texas educators. It was built and curated and is maintained and updated by the math team at the Region 11 Educational Service Center. Everything is organized by grade level.