Reading
http://www.scholastic.com/resources/article/first-grade-reading/
http://www.greatschools.org/cgi-bin/showarticle/623
http://www.greatschools.org/cgi-bin/showarticle/623
Writing
http://www.education.com/activity/first-grade/writing/
http://www.pbs.org/parents/education/reading-language/reading-milestones/first-grader-language-development-milestones/first-grader-activities-games/
http://www.pbs.org/parents/education/reading-language/reading-milestones/first-grader-language-development-milestones/first-grader-activities-games/
Social Studies
http://school.familyeducation.com/social-studies/printable/36059.html
Math
http://www.pbs.org/parents/education/math/activities/first-second-grade/
http://www.education.com/reference/article/first-grade-math-home/
http://www.education.com/reference/article/first-grade-math-home/
Science
http://www.education.com/slideshow/awesome-science-first/
Other
http://www.teachervision.fen.com/education-and-parents/resource/3729.html
http://www.pbs.org/parents/goingtoschool/what_1.html
http://www.pbs.org/parents/goingtoschool/what_1.html