Interactive
University of Cambridge

University of Cambridge: Nrich: Game Counter Roundup

For Students K - 1st
Sharpen your problem solving and strategy skills playing this interactive game, Counter Roundup. The rules are simple but the game requires some thinking if you want to beat the computer. There is a "Get Printable Page," link at the top...
Unit Plan
Khan Academy

Khan Academy: Multiply by Tens Word Problems

For Students 2nd - 4th Standards
Solve word problems with multiples of ten. Decompose multiples of ten to multiply. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Activity
Annenberg Foundation

Annenberg Learner: Math in Daily Life

For Students K - 1st
Read about what math has to do with cooking, chances of winning a game, even decorating your home. Teachers may want to peruse this site for ideas about real world applications in their lesson planning.
Activity
University of Cambridge

University of Cambridge: Nrich: Games Frogs

For Students 3rd - 5th Standards
Use this interactive game to improve your knowledge and understanding of patterns and algebra. Can you describe a rule to follow where you make the least moves? Just follow the instructions below it.
Unknown Type
University of Waterloo (Canada)

Centre for Education in Mathematics and Computing: Ratio and Rate [Pdf]

For Students 6th - 8th Standards
Learners explore the concepts of rate and ratio in a variety of problem-solving situations. Worksheets contain definitions and visual representations of concepts. Link to related ratio game. Other skills include measurement, data...
Activity
NumberNut

Number Nut: Let Math Begin With Addition

For Students Pre-K - 1st Standards
This introductory addition lesson, explores the relationship between adding and number patterns using a number pyramid designed by mathematician Carl Gauss. A short lesson with interesting facts and links to related games for practicing...
Activity
abcteach

Abcteach: Number Puzzles

For Teachers 2nd - 4th
[Free Registration/Login Required] Solve the number puzzles as you practice basic addition skills and improve your number sense. The site has challenging activities with varying levels of difficulty.
Lesson Plan
Can Teach

Can Teach: Target: An Equations Game

For Teachers Pre-K - 1st Standards
Using decks of cards and knowledge of number operations, students develop multi-step equations to reach a target number.