This site was created by Jenni Swanson Voorhees and Merry Adelfio for the Sidwell Friends Lower School Community, Copyright 2002.
We hope to offer interesting extensions of the Lower School math curriculum that are interactive and encourage math thinking and sharing in our community. All materials are intended solely for educational purposes. Materials drawn from published works have been cited on the page, and listed here in the credits.
Any thoughts, ideas, activities or links you would like to share are more than welcome.
You may contact us through our school email.
Contact Jenni Swanson Voorhees with comments or questions about this site.
Contact Merry Adelfio with comments or questions about Lower School math at Sidwell.
Many of our problems are written and corrected by Raina Fishbane.
The page design is a feature of Microsoft FrontPage.
Many of the animated frogs can be found on www.freakyfrogs.net.
Other clipart is found on the www.microsoft.com website.
The poem on the home page can be found in: Marvelous Math, a book of poems, Lee Bennett Hopkins, ed.,1997, Aladdin Paperbacks, New York
The Guess the Number, Mystery Numbers, School Math and the Whale Math activities were inspired by the book: Get It Together: Math Problems for Groups, Grades 4-12, Tim Erickson, ed., 1989, Lawrence Hall of Science, Berkeley, California
Lion Math was inspired by the book: Do Elephants Eat Too Much?, Robert Balfanz, 1992, Everyday Learning Corporation.
The Thanksgiving Puzzle was drawn from: 101 Short Problems, EQUALS, Lawrence Hall of Science, University of California at Berkeley, ©1995
The Sleigh Ride was drawn from : MacIntosh, A., Reys, B., Reys, R., NumberSENSE: Simple Effective Number Sense Experiences, Grades 3-4, Dale Seymour Publications, 1997.
The Snowballs and the Woodland Animals problems were based on a page in The Problem Solver 3, Creative Publications, 1987.
The 12 Days of Christmas problem was drawn from: What's Next? Volume 1, AIMS Education Foundation, 1996
Many Mice is adapted from Make It Simpler: A practical guide to problem solving in mathematics, Carol Meyer and Tom Shallee, Addison Wesley, 1983
The Metric Time problem came from Problem of the Week, Lyle Fisher and William Medigovich, Dale Seymour Publications, 1981
The Name That Food and Sports Math problems were adapted from materials by Marcy Cook.
Jacob's Age, Time to Paint, Car Talk, Puppy Math and A Fish Story were drawn from IQ Puzzles: A Collection of over 500 Mind-Benders and Brain Teasers, compiled by Joe Cameron.
The Lost Bookmark problem was drawn from Let's Talk Math, by Pat Lilburn and Pam Rawson.
Feathers and Fur was drawn from The Math Forum - Elementary Problem of the Week - http://mathforum.org/elempow
Horse Trading was drawn from About Teaching Mathematics: A K-8 Resource, by Marilyn Burns, Math Solutions Publications, 1992.
Glossary terms were based on the glossary in Everyday Mathematics: Teacher's Reference Manual, Grades 4-6, University of Chicago, 2002.
All underwater photos are copyright © 1998, 1999, 2001, 2002 by Curt Harpold, used here with permission from the photographer.
Mrs. Stoneham's Wallet was adapted from How to Assess Problem-Solving Skills in Math by Bena Kallick and Ross Brewer
Snack Time is based on a logic problem from PERPLEXORS by Greg Gottstein, published by Mindware.
Christmas Mice was based on a problem from The Problem Solver 2, Creative Publications, 1987.
Many thank-yous to Dara Feldman and Christine Fernsler for the wonderful resources they shared!