Annenberg Foundation
Annenberg Learner: Patterns in Mathematics: How Many Valentines?
Students look for patterns to determine how many valentines will be distributed in a class of 28 students. After trying the problem, they can look at several other methods that could be used and compare the answer they got. There is also...
Annenberg Foundation
Annenberg Learner: Patterns in Mathematics: Mystery Operations
This interactive activity allows you to change an equation's numbers in an attempt to figure out what operations are being used to control the answers.