Daily Numeracy Practice
"An information and technologybased society requires individuals who are able to think critically about complex issues, analyse and adapt to new situations, solve problems of various kinds, and communicate their thinking effectively. The study of mathematics equips students with knowledge, skills, and habits of mind that are essential for successful and rewarding participation in such a society".
Ministry of Education Mathematics Curriculum 
In order to facilitate the problemsolving and communication processes, students are encouraged to practice basic numeration skills (+ /  / x / ÷) on a daily basis. The following are links that provide students the opportunity to practice and master such skills in an engaging way:
Web Math Minute  Printable & online practice of + /  / x / ÷ Math Flash Cards  Online practice of + /  / x / ÷ Online MULTIPLICATION Flash Cards (up to 9s) TVO Kids Tumbleweed's Math Maze game 
Pearson "Math Makes Sense" Resources
Grade 5 Math Makes Sense Practice & Homework Book (Saskatchewan)
Grade 5 Math Makes Sense Supplements 
Resources for Parents
The following resources, Helping Your Child Learn Math and Doing Mathematics with Your Child (K6), are publications by the Ministry of Education detailing simple ways in which you can help support what your child is learning in the classroom.
Figure This! Math challenges for children and families, by strand 

Math Humour
Resources for Students
Helpful and engaging links for students. Lessons. Games. Activities. Stuff.
Math Dictionary for Kids  Math terms & their definitions
Jump Math  Free Math Tools for Students and Parents Online Math Learning Purple Math Khan Academy  Free Math Practice IXL  Online Math Practice (Ontario Curriculum Links) XP Math GAMES 
KidSites.com  Links to various math sites
Math Playground  Math games Math Frog  Activities & games, sorted by strand mathwire.com  Activities & games, sorted by strand eLearning for Kids  Free Math Practice Games mathmaster.org  Math VIDEOS & activities 
Number Sense and Numeration
Fractions
Interactive equivalent fractions tool

Placing fractions on a number line

Measurement
Elapsed Time 
Geometry and Spatial Sense

eLearning for Kids: Angle measurement practice
TVO Kids Pirates Maps and Traps game TVO Kids Triangle Alley game TVO Kids Build Math City actvities 
Patterning and Algebra
TVO Kids Flower Frenzy game