WOODSTOCK – The McHenry County Conservation District will offer a series of programs to help families make winter discoveries.

• Nature Play Open House: 10 a.m. to noon Monday at Prairieview Education Center, 2112 Behan Road, Crystal Lake. Parents and tots are invited to experience the fun and learning available at Prairieview Education Center. Play with nature puzzles, games, puppets and more. There will be a guided hike at 11 a.m. A craft table will be set up throughout the program. Those who plan to join the hike should dress for the weather. The program is free for county residents and $3 for nonresidents. It is for children ages infant to 5, accompanied by an adult. The registration deadline is Wednesday.

• Spectacular Snowflakes: 1 to 2:30 p.m. Feb. 16 at Prairieview Education Center, 2112 Behan Road, Crystal Lake. What is a stellar dendrite? Why is snow white? Are there really no two snowflakes that are exactly alike? Participants should dress for the weather. The program is free for county residents and $5 for nonresidents. It is for youth ages 8 to 10. The registration deadline is Monday.