Mathematics in Grades K-5
TEKS (Texas Essential Knowledge and Skills)
The National Library of Virtual Manipulatives: This site provides web-based manipulatives to support the K-8 program. The manipulatives are organized by mathematical strand.
Illuminations: This site is a rigorous collection of web-based mathematics resources.
Cool Math 4 Kids: This site offers a variety of math and logic games to challenge your child.
PBS Cyberchase: This site provides math-based interactive games.