http://www.virtualnerd.com/algebra-1/linear-equation-analysis/slope-intercept-form/slope-intercept-form-examples/slope-intercept-form-definition
https://jeopardylabs.com/play/algebra-and-slope-review
http://nces.ed.gov/NCESKIDS/createagraph/default.aspx
http://www.teachertube.com/viewVideo.php?video_id=132442
http://www.algebrahelp.com/worksheets/view/graphing/slope.quiz
http://www2.gcs.k12.in.us/jpeters/slope.htm
http://www.quia.com/rd/35145.html?AP_rand=1468352394
http://www.quia.com/mc/499416.html
http://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/v/slope-of-a-line
http://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/v/algebra--slope
http://www.khanacademy.org/math/algebra/equation-of-a-line/e/slope_of_a_line
http://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/v/slope-example
http://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/v/algebra--slope-2
http://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/v/algebra--slope-3
http://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/v/hairier-slope-of-line
http://www.ltcconline.net/greenl/java/BasicAlgebra/Linegraph/LineGraph.htm
http://www.onlinemathlearning.com/algebra-math-games.html (Scroll down o "Interactive Math Games")
http://www.mathplayground.com/percent_shopping.html
http://www.funbrain.com/cgi-bin/pw.cgi?A1=s&A2=1
http://www.mathplayground.com/mathatthemall2.html
https://jeopardylabs.com/play/percent-review-game
http://www.mathplayground.com/Decention/Decention.html
www.kidsmathgamesonline.com/numbers/percentages.html
http://www.math-play.com/Decimals-and-Percents/Decimals-and-Percents.html
http://www.mathplayground.com/balloon_invaders_percent.html
http://www.mathplayground.com/percent_shopping.html
http://www.arcademicskillbuilders.com/games/ratio-blaster/ratio-blaster.html
http://www.math.com/school/subject1/practice/S1U2L1/S1U2L1Pract.html
http://aaamath.com/rat62b-findratios.html#section2
http://www.wisc-online.com/objects/ViewObject.aspx?ID=GEM2004
http://www.math.com/school/subject1/practice/S1u2L2/S1U2L2Pract.html
http://www.arcademicskillbuilders.com/games/ratio-stadium/ratio-stadium.html
http://www.aaamath.com/B/g8-unit-rate.htm
http://www.aaamath.com/B/g8-rat-prop-crossx.htm
http://www.math-play.com/soccer-math-multiplying-fractions-game/multiplying-fractions-game.html
http://www.math-play.com/Multiplying-Fractions-Millionaire/Multiplying-Fractions-Millionaire.html
http://www.math-play.com/Adding-Fractions-Game.html
http://www.sowashco.k12.mn.us/ro/pages/studentlinks/map/
http://www.prepdog.org/8th-grade.htm
http://www.prepdog.org/7th-grade.htm
https://jeopardylabs.com/play/angle-relationships
Jeopardy - Multi-Step Equations
https://jeopardylabs.com/play/solving-multi-step-equations1
https://jeopardylabs.com/play/2-6-solving-two-step-equations
http://www.teachertube.com/viewVideo.php?video_id=324740
http://www.virtualnerd.com/algebra-1/relations-functions/graphing-linear-equations/graphs-examples/linear-equation-graphing-method
http://www.math.com/school/subject1/practice/S1U2L4/S1U2L4Pract.html
http://www.learner.org/courses/teachingmath/grades6_8/session_05/section_02_b.html