This site has links to base ten block games as well as sites that give kids the opportunity to use the blocks as they work their own problems.
This is a great site for kids who need remediation in counting and addition using ten frames.
This is a good site for remediation of subtraction facts. An illustration is only shown after the fact is solved, so students may want to use counters while working.
This is a great site for practicing number relationships. Kids have to click a square on a blank hundred's chart to find the number that's given.
This site offers enrichment problems for grades k-4 that align with the Saxon lessons. Check out the Math Stumpers for more of a challenge.
Many interactive activities that align with AR SLEs.
This catchy song is a good resource for reinforcing units of time.
Great logical reasoning game for kids who need a challenge.
Internet 4 Classrooms
Though this isn't a state specific site, it's very easy to navigate to find links for most SLEs. If you don't find what you need, be sure to search a few grade levels above and below as there are more resources there. There's also a search option at the bottom.
This will let students practice number sense, patterns, and logical reasoning skills.
This site offers a variety of activities for primary grade SLEs. Very appealing graphics.