Activity
University of Cambridge

University of Cambridge: Nrich: Magic Squares

For Students 3rd - 8th Standards
In a Magic Square all the rows, columns and diagonals add to the same number. This number is called the Magic Constant. Learn math fundamentals visually and have fun at the same time.
Unknown Type
abcteach

Abcteach: Division

For Teachers 3rd - 5th Standards
[Free Registration/Login Required] "Practice makes perfect!" Students improve their division skills by reviewing facts from one to twelve. Printable worksheets and links to related sites also available.
Activity
University of Cambridge

University of Cambridge: Nrich: Twenty Divided Into Six

For Students Pre-K - 1st Standards
On this one page website sharpen your logic and addition fact skills while working on this challenge. The solution is available to double check your solution.
Study Guide
Other

Ohio Department of Education: Fifth Grade Achievement Test (Practice Test) [Pdf]

For Students 4th - 6th
Half-length practice test for the third grade OAT (Ohio Achievement Test). The test includes 17 multiple-choice and 3 open-response question dealing with topics such as measurement (unit conversion, time), geometry (volume, area), data...
Interactive
Other

Scweb4free.com: Addition Balloons

For Students Pre-K - 1st Standards
Find the sum of the two red ballons among the green ballons in this concise addition game. Practice basic facts through 15. Answers checked instantaneously.