Even if you aren't homeschooling - lots of great activities to do at home with your little ones! Big Round-up of Homeschool Kindergarten Science Activities: Astronomy, Earth Science, States of Matter, Reasoning and Logic and more.
Math Workshop- this teacher explains exactly how she conducts her guided math lessons in her third grade classroom. (extremely informative post that includes a FREEBIE!) and now she also has detailed lesson plans!