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* leaf math * spider math * pumpkin math 
Try some of these handson fall math activities... no computer needed! Or enjoy some fall math online activities at Math Cats

* Leaf Math
Variation:  On graph paper, trace around onehalf of a leaf, making sure that the stem points straight down. Remove the leaf. Try to draw the mirror image of this halfleaf to form a completely symmetrical leaf. Can you do it? If not, why not? If it's not symmetrical, make minor adjustments to both halves of the drawing until you can complete a symmetrical leaf. * What's my size?
1) Estimate the surface area of a leaf based on graph paper units. If you have several leaves, or each student has one leaf, try to guess which leaf is the largest.
Variation: * What's my line? Place a leaf on graph paper and trace around it. Try to determine a method for estimating the length of the leaf's "perimeter." (If the outline were stretched out to become a straight line, how long would it be?)
Suggestions: * Leaf weightloss plan 1) Weigh a small pile of freshlygathered leaves which can flex without breaking.
Suggestions:
Variations:  
* Spider Math
* How many legs?
1) Get a lot of plastic spiders, or draw simple spiders on small squares of paper. Give each small group a handful.
Variation: (These spider legcounting ideas were shared by Jenny (10/14/01) and Chris/CT/1 (10/12/01) on the teachers.net primary elementary chatboard.) * The math of making a spider web
1) Visit this page: 2) Make a poster or fact sheet on the math of making a spider web. (Use your own words!)
There are many types of spider webs, but for these activities, we'll focus on the most common type, the orb spider web.
1) Research orb spider webs. See the link under "The math of making a spider web," above, for stepbystep diagrams showing how an orb spider web is made, or visit the "Garden Spider" page at www.wellesley.edu/Activities/homepage/web/Species/aspidergarden.html for more information and a diagram labelling the parts of the orb web.
Variation: (This idea was shared by Rheta Greenwood (10/13/01) on the teachers.net primary elementary chatboard.) Craft variations: Turn your graphpaper web into a web you can hang in a corner or a window!
1) a glittery web made of glue
2) a web made of spaghetti (Both of these craft variations were adapted from ideas found at:
Visit Math Cats' string art  www.mathcats.com/crafts/stringart.html  
* Pumpkin Math * How many seeds?
1) Cut open a pumpkin. Have each small group estimate how many seeds are in the pumpkin. * How much does it weigh?
1) Take turns holding a pumpkin and guessing how much it weighs.
Variation:
1) Estimate the circumference of a pumpkin at its widest point.
Variation:  
*fall math online activities at Math Cats
* Haunted Hill  www.mathcats.com/explore/hauntedhill.html
* Spider Web  www.mathcats.com/microworlds/spiderweb.html
* Flying Witches  www.mathcats.com/microworlds/flyingwitches.html 

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