Grow a Garden

"Adults tend to want control over their landscaping to keep the aesthetics,” says Kelly Keena, director of the Thorne Ecological Institute in Colorado. “But the value to kids is in including them in every step of the process.”

A vegetable garden is an easy start. “Ask your children what they would like to have as a fresh ingredient in a family dinner,” Keena says. “Talk out loud as you garden together — the need to amend the soil, what plants need to produce food ….” And let kids get right in there in the dirt when planting, tending and picking. Even toddlers can use a small plastic shovel, put seeds in the soil, and pull a carrot out of the ground (while you take a million photos).

No room for growing veggies? Grow a few in pots on a balcony, or find local farmers' markets, u-pick farms and community supported agriculture programs. Local Harvest offers a wonderful directory of farmers' markets and family farms. Or find a community garden in your area through the American Community Gardening Association.

To connect children to the plants, plant things kids want to plant, says Vanessa Keeley, director of youth programs at Growing Gardens, a community garden in Boulder, Colo. She also cautions against too much too soon. “Do it in small doses, and not during the hottest part of the day,” Keeley advises.

Get Crafty

Rainy day? Turn cereal boxes into magazine organizers (or a fun way corral kids books) by covering them in used wrapping paper, or paper grocery bags you decorate together. Explain the importance of reusing materials that still have a useful life, rather than throwing them in the landfill.

Or make a quick model of the solar system with clay and straws — and talk about how Earth is the only planet we know we can live on, and why we all need to take care of our planet.

"Whether you live in a cabin in the woods, a house in the suburbs, or an apartment in the city, you'll find natural treasures that you can turn into a huge number of projects and gifts," says Laura C. Martin in her book "Nature's Art Box." Martin teaches how to make twig baskets, clay pots, potato stamps and dozens of other eco-friendly projects.

Take a Hike

“For younger children, the benefit is in shorter distances that are full of wonder, observations and questions,” Keena says. “For older kids, give them a reason to hike with you. What’s in it for them?” She recommends getting a local phenology (the study of the times of recurring natural phenomena) book detailing the natural processes that occur during specific times of the year. You can also get a field guide to your area from the Audubon Society. “You can even theme your hike around those events,” Keena adds. Try a “name that wildflower” hike in mid- to late spring, for example.

Encourage your child’s school to offer environment-oriented field trips and activities, too. Earth Force is a great resource, offering programs to help educators bring environmental stewardship topics, events and activities into the curriculum.

Bike to the Store

Between 1990 and 2001, miles driven for shopping grew more than 40 percent — three times as fast as all other types of driving — according to the U.S. Department of Transportation. Ride bikes to the store together — get a cruiser bike with a big basket (or take a backpack). It’s great exercise — and a great opportunity to talk with kids about how using fossil fuels impacts the Earth. Take a stash of reusable shopping bags with you.

Reduce Your Carbon Footprint Together

From recycling to composting to using less water, eco-friendly activities can start before you leave the house. Calculate your environmental footprint together using The Conservation Fund's Carbon Zero Calculator. Let kids type in the numbers, and talk with them about what your footprint means. Then involve your kids in steps you can take to make it smaller — such as switching to compact fluorescent light bulbs, which use 75 percent less energy than standard incandescents.

Whatever you do, embrace spontaneity, advises Keena. “Don’t feel like you have to plan every minute of each outdoor activity with your kids, or go to a wilderness area for meaningful experiences to happen,” she says. Just getting kids outdoors often leads to happenstance environmental education — discovering an earthworm, for example, or a honeybee on a flower. Set aside time to play in the backyard or walk to the park with your kids a couple of times a week, and experience the environment together even when you can’t get away.