multiplication
measurement
http://www.multiplication.com/

http://www.onlinemathlearning.com/grade-3.html

http://www.funbrain.com/poly/     area and perimeter practice

http://www.kidsmathgamesonline.com/numbers/mathdata.html  collecting data

http://www.internet4classrooms.com/skill_builders/data_analysis_math_third_3rd_grade.htm  graphing

fractions

https://www.eduplace.com/kids/hmm/g_3.html math test prep

https://www.mathplayground.com/area_perimeter.html area and perimeter

http://interactivesites.weebly.com/areaperimeter.html area and perimeter

http://www.mathplayground.com/tetrasquares.html tetrominoes

http://mrnussbaum.com/shapeinvaders1/ polygons

https://www.turtlediary.com/games/third-grade/geometry.html polygons/geometry

http://www.math-play.com/Polygon-Game.html name that polygon

http://www.sheppardsoftware.com/mathgames/geometry/shapeshoot/PolygonShapesShoot.htm find the polygons