University of Cambridge
University of Cambridge: Nrich: Heads and Feet
Solve this problem about hens and sheep and practice your algebraic thinking all at the same time. A solution is provided at this one page website.
CK-12 Foundation
Ck 12: Algebra: Equations That Describe Patterns
[Free Registration/Login may be required to access all resource tools.] Recognize and find numerical patterns by finding a rule
Other
Maisonet Math: Simply Using the Distributive Property
Practice rewriting expressions using the distributive property. The examples on this quiz are basic examples.
CK-12 Foundation
Ck 12: Algebra: Equations That Describe Patterns
[Free Registration/Login may be required to access all resource tools.] Learn how to write equations and check solutions.
University of Cambridge
University of Cambridge: Nrich: Brothers and Sisters
Figure out the ages of the children in this family using the clues and your sound algebraic thinking. Check the solution after you complete the problem.
Other
Emsl: The River Crossing Problem
The lesson plan for an interesting word problem concerning swimming and rowing across a river, being swept downstream by the current, and walking back up the other side. Basic arithmetic skills are all that are needed to approach the...
National Council of Teachers of Mathematics
Nctm: Figure This: Tan, Don't Burn
How about a math challenge for a sunny day at the beach? Apply your problem solving, number sense, and logical reasoning skills to find out how long it would take Helix to get sunburned using SPF 10 lotion. Discover why understanding...