a very excellent set of exercises for any elementary mathematics teacher preparing lessons, and a great guide to the best available series of mathematics textbooks in English.
You might also try asking your question on the appropriate forum
(the forum is really for middle school math, but you could give it a try) on the Art of Problem Solving site, a generally good site for discussion of math.
Definitely baseball statistics for that audience. Also finishing times for sprints to thousandths of a second.
Not to answer your question, but to suggest useful resources for elementary math teaching, I'll suggest
http://www.amazon.com/Knowing-Teaching-Elementary-Mathematic...
an essential book for someone in your profession, and
http://www.amazon.com/Vision-Elementary-Mathematics-W-Sawyer...
a book with wonderful teaching tips, and
http://www.amazon.com/Elementary-Mathematics-for-Teachers/dp...
a very excellent set of exercises for any elementary mathematics teacher preparing lessons, and a great guide to the best available series of mathematics textbooks in English.
You might also try asking your question on the appropriate forum
http://www.artofproblemsolving.com/Forum/index.php?f=300
(the forum is really for middle school math, but you could give it a try) on the Art of Problem Solving site, a generally good site for discussion of math.