HOLDEN – Fields Pond Audubon Center offers two programs for families that home school their children:

. Unlocking Nature’s Secrets with Computers, 9 a.m.-2 p.m. Wednesday and Thursday, Nov. 7-8. For children age 10 to 15. Class size limited to 10. Ruth Perry, instructor. $55 members, $65 others, paid at preregistration.

Collect data from the forest, field, stream or pond. Inside, analyze the data using computer programs and compare it with data collected by other researchers. Finish by preparing an electronic presentation of your discoveries. Computer programs include Excel, Internet Explorer, PowerPoint and Word. Computers provided by Maine Audubon.

. Rockin’ with Rocks, 10 a.m.-noon Wednesday, Dec. 5. For ages 8 to 14. Class size limited to 15. $8-one; $14-two, members; $10-one; $18-two, others, paid at preregistration. Aimee Noble, instructor.

To register or to obtain information, call Fields Pond Audubon Center at 989-2591.

Do you really know what a rock is? And what is not a rock? Discover the world of geology. Learn about the rock cycle, from their fiery volcanic origins, shaped by wind and water, and changes made by heat and pressure deep within the Earth. Test the skills you learn to identify minerals. If time and weather permit, explore the rocks of Fields Pond. This class will complete most of the requirements for the Cub Scout Geology Belt Loop, Webelos Geology requirements, and Cadette and Senior Girl Scout Geology Badge.