# math

posted by
**alex** on
.

i'm supposed to come up with different questions for 11-12 year olds, 13-14 year olds, and 17 year olds. the topic is the triangular number sequence.

any ideas for them?

posted by
**alex** on
.

i'm supposed to come up with different questions for 11-12 year olds, 13-14 year olds, and 17 year olds. the topic is the triangular number sequence.

any ideas for them?