Lancaster County Department of Parks and Recreation will offer programs to the community. Unless otherwise noted, there is a per-person fee, and activities will take place at the Environmental Center in Lancaster County Central Park, 1 Nature's Way, Lancaster. Additionally, registration and payment are required by noon on the business day before the event unless otherwise stated. To register, call 717-295-2055 or visit http://www.lancastercountyparks.org and click on Online Program Registration.

Jump Into STEM: Measurements of Nature, a program for children ages 3 to 5, will take place on Thursday, Jan. 6, from 10 to 11 a.m. Preschool scientists will have opportunities to practice their math skills by measuring things such as animal furs, skulls, and other natural objects.

Brownie Girl Scouts: Math in Nature will be held on Saturday, Jan. 8, for Brownie Girl Scouts age 6 and older. The programs will include Shapes in Nature from 9 to 10:30 a.m., Numbers in Nature from 11 a.m. to 12:30 p.m., and Design With Nature from 1 to 2:30 p.m. Scouts may sign up for one or more of the programs. Girls attending all three programs should bring a water bottle, a nut-free snack, and lunch.

Tracks and Turds will be offered to people of all ages on Sunday, Jan. 9, from 2 to 3:30 p.m. and on Tuesday, Jan. 18, from 10 to 11:30 a.m. Participants will go tracking with a naturalist to locate and identify tracks, scat, and other clues helpful in indicating which animals are active and surviving in the winter months. Participants should dress for the weather.

TNT Science: Owls and Their Pellets will take place from 6:30 to 8 p.m. at Pavilion 22 on Tuesday, Jan. 11. Participants ages 11 to 17 will join a naturalist in learning about owls' hunting methods, common prey, and communication. Each young scientist will dissect an owl pellet, and then children will look for owls outdoors. Parents must sign a release waiver before dropping off their children.

Homeschool Wednesday: Migration on African Plains will be held on Wednesday, Jan. 12, from 10 to 11:30 a.m. for students ages 8 to 12. Students will explore the annual cycles of climate and resulting mammal migrations across the African plains. Students should wear old clothes and plan for indoor and outdoor activity. Children under age 8 are welcome if accompanying older siblings, but they must be registered.

Pre-Colonial Pennsylvania, for people of all ages, has been set for Thursday, Jan. 13, from 6 to 8 p.m. The presentation will explore what the area looked like long before colonists arrived on the continent and will cover extinct species, old growth forests, and the tribes indigenous to the area.

TNT Science: Organ Dissection will be offered to individuals ages 11 to 17 on Tuesday, Feb. 8, at Pavilion 22, from 6:30 to 8 p.m. Early registration is required by noon on Tuesday, Jan. 25. Young biologists will be provided with their own specimens of each organ to dissect. Parents must sign a release waiver before dropping off their children.