|

Make a Fossil


Most fossils form this way: A living thing decays and leaves a mold in its own shape behind in the earth. Then rock forms inside the mold, creating a copy of the living thing. This activity will help your child understand how fossils form.

Materials

  • 4 cups plaster of Paris
  • 2 1/2 cups water
  • Disposable container
  • Old or disposable small baking pan
  • Petroleum jelly

Directions

  1. Mix 2 cups of plaster of Paris with 1 1/4 cups of water in a disposable container.
  2. Spread the plaster in the bottom of an old or disposable small baking pan to a thickness of about 1 inch.
  3. Wait about 2 minutes until the plaster begins to set.
  4. Coat your child's hand with petroleum jelly.
  5. Gently press his hand into the plaster just enough to dent the surface. Hold his hand in place for a few minutes, then remove it and let the plaster set until it's completely hard.
  6. Coat the hand-shaped mold with petroleum jelly.
  7. Mix up another batch of plaster and pour it into the mold.
  8. Let the plaster harden, then gently separate the "fossil" from the mold.
  9. If they don't separate easily, hold the pan upright and tap it lightly with a hammer.

|

Copyright © 2001 by Patricia Kuffner. Excerpted from The Children's Busy Book with permission of its publisher, Meadowbrook Press.

To order this book visit Meadowbrook Press.


highlights

10 Nut-Free Lunch Ideas
Packing nut-free school lunches can be tricky! If your child has a nut allergy or his school has banned peanut butter, try these tasty and safe nut-free lunches.

Find Today's Newest & Best Children's Books!
Looking for newly released books for your child? Try our new Book Finder tool to search for new books by age, type, and theme, and create reading lists for kids!

Top 12 Fundraising Ideas
Need some new ideas for raising big money for your child’s school or team? Check out the best school fundraisers, suggested and reviewed by parents like you!

Ready for Kindergarten?
Try our award-winning Kindergarten Readiness app! This easy-to-use checklist comes with games and activities to help your child build essential skills for kindergarten. Download the Kindergarten Readiness app today!

stay connected

Sign up for our free email newsletters and receive the latest advice and information on all things parenting.

Enter your email address to sign up or manage your account.

Facebook icon Facebook icon Follow Us on Pinterest

editor’s picks