Below is the Common Core for Math Link:
http://www.corestandards.org/the-standards/mathematics/grade-1/introduction/

Unpacking Document (click here)

Pacing Guide:




Websites for All Units of Math:
http://www.ixl.com/math/standards/north-carolina/grade-1 (Common Core)
http://funschool.kaboose.com/parent-teacher/kindergarten-2nd-grade.html
http://www.ictgames.com/resources.html
http://www.mathgametime.com/grade/1st-grade
http://www.sowashco.k12.mn.us/ro/pages/studentlinks/math/k-1math.htm

Operations & Algebraic Thinking:
www.homeschoolmath.net/online/addition_subtraction.php
http://www.worksheetworks.com/math/time/calendar-word-problems.html (calendar word problems)
http://www.sheppardsoftware.com/mathgames/matching/AdditionX.htm (missing addens)
http://www.gamesgames.com/game/Monkey-Math-Balance.html (balanced equations)

Number & Operations in Base Ten:
http://jmathpage.com/JIMSNumberaddsubtract.html
www.math-aids.com/Number_Lines/www.helpingwithmath.com/resources/oth_number_lines.htm
www.teachforever.com/.../ultimate-number-line-game-number-sense
http://ictgames.com/mummyNumberLine/index.htm
http://www.covenantworks.com/Bouncy-A/Math/Money/index.htm (Money)

zondle - games to support learning


Measurement & Data:
http://jmathpage.com/JIMSMeasurementclocks.html
http://jmathpage.com/JIMSMeasurementlengthmassvolume.html
http://jmathpage.com/JIMSMeasurementmoney.html
http://www.tvokids.com/games/clocktalk (Time)

Geometry:
http://jmathpage.com/JIMSGeometrypblocksgboards.html




Place Value:
http://illuminations.nctm.org/activitydetail.aspx?id=75
http://education.jlab.org/placevalue/index.html