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Ongoing

Maricopa County Parks and Recreation: Estrella – Invasive Species Removal

Estrella Mountain Regional Park 14805 W. Vineyard Ave., Goodyear

Meet at the park’s Nature Center. Join us in removing invasive species and reducing wildfire risk in our parks. Participants will learn to identify several invasive species, their phenology and characteristics, and how to effectively remove these invasive plants. The initiative is to remove invasive plants as a proactive step toward ecological restoration and to...

Free with Park Fee

Maricopa County Parks and Recreation: Estrella – Invasive Species Removal

Estrella Mountain Regional Park 14805 W. Vineyard Ave., Goodyear

Meet at the park’s Nature Center. Join us in removing invasive species and reducing wildfire risk in our parks. Participants will learn to identify several invasive species, their phenology and...

Free with Park Fee

Maricopa County Parks and Recreation: San Tan – Invasive Species Removal

San Tan Mountain Regional Park 6533 W. Phillips Rd., Queen Creek

Meet at the park’s Nature Center. Join us in removing invasive species and reducing wildfire risk in our parks. Participants will learn to identify several invasive species, their phenology and characteristics, and how to effectively remove these invasive plants. The initiative is to remove invasive plants as a proactive step toward ecological restoration and to...

Free with Park Fee

Maricopa County Parks and Recreation: Spur Cross – Invasive Species Removal

Spur Cross Ranch Conservation Area 44000 N. Spur Cross Rd., Cave Creek

Meet at the main parking lot. Join us in removing invasive species and reducing wildfire risk in our parks. Participants will learn to identify several invasive species, their phenology and characteristics, and how to effectively remove these invasive plants. The initiative is to remove invasive plants as a proactive step toward ecological restoration and to...

Free with Park Fee

Arizona State Parks and Trails: Guided Bird Walks at Red Rock

Red Rock State Park 4050 Red Rock Loop Rd., Sedona

Bird enthusiasts join a naturalist for a guided walk appropriate for beginner and advanced birders. Most year-round birds are found in the riparian area next to Oak Creek or along the field behind the Visitor Center. The Audubon Society has designated Red Rock State Park as part of the Lower Oak Creek Important Birding Area...

Free with Park Fee

Friends of the San Pedro River: San Pedro House Nature Walk

San Pedro House 9800 Highway 90, Sierra Vista

The San Pedro River is one of the last free flowing rivers in the Southwest and home to one of the largest cottonwood-willow riparian forests remaining in Arizona. On this walk we will discuss the interactions between the living and nonliving components that make up this unique riparian ecosystem and its importance to the surrounding...

Free

Maricopa County Parks and Recreation: Lake Pleasant – Earth Day Clean-Up

Lake Pleasant Regional Park 41835 N. Castle Hot Springs Rd., Morristown

Earth Day Litter Pick-Up at beautiful Lake Pleasant Regional Park. Volunteers can choose to pick up litter along the shoreline, day-use areas, and campgrounds. Volunteers will be working in the...

Free with Park Fee

Maricopa County Parks and Recreation: Mesquite Festival

Hassayampa River Preserve 49614 U.S. Hwy. 60 89, Wickenburg

Hassayampa River Preserve Mesquite Festival. Discover all the “Tree of Life” has to offer at this free, family-friendly community event.   Discover all the “Tree of Life”, Mesquite, has to offer at this FREE, family-friendly community event. There will stations or speakers relating to the following topics: cooking tips, food sampling, kids games, and information on...

Free

Mission Garden: Traditional O’odham Agriculture

Mission Garden 946 W. Mission Ln., Tucson

Every third Saturday of the month At Mission Garden’s Placita (near the kitchen) This event is FREE. Mission Garden continues this tradition of talks and demonstrations about O'odham Agriculture. We...

Free

Chandler Nature Center: Earth Day Celebration

Chandler Nature Center 4050 E. Chandler Heights Rd., Chandler

The Chandler Earth Day Celebration brings the community together to show Mother Earth some love! Discover ways to live an eco-friendly lifestyle through crafts, activities, and information booths featuring a...

Free

Natural History Institute: Prescott Earth Day Celebration

Join the Natural History Institute at the 2025 Prescott Earth Day Celebration! Visit the Downtown Prescott Courthouse Plaza on April 19th for over 60+ educational booths, exhibits, and activities to protect & celebrate the place we live!

Free

Pima County Parks and Recreation: Tour of Historic Canoa Ranch

The Raul M. Grijalva Canoa Ranch Conservation Park 5375 S. I-19 Frontage Rd., Green Valley

Join a walking tour of the Canoa Ranch headquarters. Visit the historic buildings and corrals and enjoy the special exhibits of the people of Canoa.

Free

Yavapai County Free Library District: Coding Club

Yavapai County Free Library District - Cottonwood Public Library 100 6th St., Cottonwood

Kids ages 8-17 can come learn to code using Scratch. Every third Saturday 10-11 am.

Free

Boyce Thompson Arboretum: Nature Play

Boyce Thompson Arboretum 37615 E. Arboretum Way, Superior

Unplug and Reconnect with Nature! Join us for Nature Play at the Children’s Garden, where families can escape the screens and dive into the wonders of the great outdoors. Every Saturday, from October to April, bring your kids to explore, play, and learn in a safe, engaging environment. Outdoor play isn’t just fun; it’s essential!...

Free with Admission

Girl Scouts of Southern Arizona: Serpents’ Secret’s _ YUMA

Come one Come ALL! Join us on this adventure!   Prepare for an immersive, hands-on encounter at the Yuma Territorial Prison. Learn about snakes found at and around the Prison. You'll gain the expertise to distinguish between native snakes and learn best practices for identifying venomous and non-venomous species. Cosmos, a rescued native Sonoran gopher...

$17.00

Pima County Public Library: 3D print and paint cute small animals

Pima County Public Library - Martha Cooper Library 1377 N. Catalina Ave., Tucson

Learn what you can make with a 3D printer! In this introductory workshop we will choose small cute animals to print. Acrylic paint and brushes will be available to paint your 3d prints! Go home with cute a small animal! Presented by Genesis Florendo, Tesla Lukow, and Mindy Dinh

Free

Watershed Management Group: Family Saturday – Beaver Believers!

Watershed Management Group Living Lab and Learning Center 1137 N. Dodge Blvd., Tucson

Join us at the Living Lab on Saturday, April 19th from 10:00am - 12:00pm to learn about the return of beavers to Tucson's rivers and what you can do to help them. This event is free for the whole family! This month’s featured activities include: Learn about beavers through arts and crafts, science experiments, and help to...

Free

Yavapai County Free Library District: Teen Musician Mechanics

Yavapai County Free Library District - Camp Verde Community Library 130 Black Bridge Rd., Camp Verde

Teen Musician Mechanics takes place on Saturdays at 10:00 am in Camp Verde Community Library's Teen Library. TMM will be focused on the nuts-and-bolts side of musical instruments, in a literal sense: repairing, modifying, maintaining, and experimenting. From learning to restring a guitar, to repairing internal wiring, TMM will give newer players agency over their instrument and allow...

Free

Arizona State Parks and Trails: Daily Guided Nature Hikes at Red Rock

Red Rock State Park 4050 Red Rock Loop Rd., Sedona

Every morning, a volunteer naturalist leads a guided nature walk informing visitors about the different life zones of Red Rock State Park. The subjects discussed on this walk may include geology, wildlife, history, archeology, and plant life. The naturalists welcome questions during the walk, enhancing the learning experience. Hikes are included with park entrance fees...

Free with Park Fee

Arizona State Parks and Trails: Catalina State Park Nature Program

Catalina State Park 11570 N. Oracle Rd., Tucson

The Nature Program is a live reptile exhibit and the perfect opportunity for people of all ages to learn all about Arizona’s wildlife! Our team of passionate, experienced volunteers are here to answer your questions and show you how these animals have adapted to survive in the Sonoran Desert. Meet at the Trailhead picnic area. This...

Free with Park Fee

Arizona Science Center: CREATE – Creator Course: Intro to Shopbot

CREATE at Arizona Science Center 105 N. 5th St., Phoenix

This 3-hour Creator Course allows Makers to learn the basics of using a 5' by 10' ShopBot CNC Router! This Course covers basic safety, machine terminology, approved materials, basic start-up and...

$50.00

Surprise Public Library: Lady Bug Adventure – Learn and Release!

Surprise Public Library - Asante Library 16755 W. Vereda Solana Dr., Surprise

Come join our exciting ladybug adventure at the Asante Library! We'll learn all about these cool insects and why they are super important for our environment. Then, we will go outside and release thousands of ladybugs into nature!

Free

Pima County Public Library: Fairy Garden Tales

Pima County Public Library - Quincie Douglas Library 1585 E. 36th St., Tucson

Do you want to learn to grow your own plants? Watch the seed turn into a veggie, herb or flower? Join us at the garden at Quincie Douglas Library.

Free

Flandrau Science Center & Planetarium: Black Holes

Flandrau Science Center & Planetarium 1601 E. University Blvd., Tucson

Where do they come from? Where do they go? Black Holes takes you on a fully immersive journey through one of the most mystifying, awe-inspiring phenomena in the universe: a black hole. Audience: General, all ages Style: Fulldome film and live star talk about black holes and astrophysics   Planetarium Tickets Adults: $14 Children (ages 3-15): $10...

Free – $14

Mesa Public Library: Peer Tutoring

Mesa Public Library - Dobson Ranch Branch 2425 S. Dobson Rd., Mesa

Free weekly tutoring from Dobson Ranch teen volunteers for students in grades K-12. Drop in and get help with reading, math, science, and writing.

Free

Phoenix Public Library: STEAM Time!

Phoenix Public Library - South Mountain Community Library 7050 S. 24th St., Phoenix

STEAM Time is a pop-up makerspace for kids and teens that provides hands-on opportunities to design, experiment, and invent as they engage in STEAM (Science, Technology, Engineering, Art and Math) through self-guided tinkering. Join us to make, create and play!

Free

Phoenix Herpetological Sanctuary: Facility Tour

Phoenix Herpetological Sanctuary Actual location given after reservations, Phoenix

Interact with some of our special animals, which for many people is a once in a lifetime experience.  Guests will get to learn about endangered species, how we contribute to conservation of those animals, some of the considerations we must take into consideration when having these reptiles in Arizona, which reptiles are good pets for children or adults, adaptations...

Free – $25

Pinal County Library District: Sewing Saturdays

Pinal County Library District - Apache Junction Public Library 1177 N. Idaho Rd., Apache Junction

Enjoy sewing no matter your experience level! Sewing machines and materials provided.

Free

Flandrau Science Center & Planetarium: Expedition Reef

Flandrau Science Center & Planetarium 1601 E. University Blvd., Tucson

​​The Expedition Reef show reveals, in exquisite detail, the breathtaking beauty and biodiversity of coral reefs around the world—and the scientists taking action to restore them. Learn the secrets of the “rainforests of the sea.” Audience: General, all ages Style: Fulldome film followed by live talk about reefs   Planetarium Tickets Adults: $14 Children (ages 3-15): $10...

Free – $14

Yuma County Library District: Ink Coasters

Yuma County Library District - Foothills Library 13226 E. South Frontage Rd., Yuma

Teens will create alcohol ink tile coaster designs! ADVISORY: Alcohol ink stains clothing. Supplies are limited. Ages 13-17.

Free

Maricopa County Parks and Recreation: Discovery Station – Be a Citizen Scientist!

San Tan Mountain Regional Park 6533 W. Phillips Rd., Queen Creek

Stop by an information table where Ranger Kevin will teach you how to use your phone to identify and document your nature findings to help the scientific community.   Ranger Kevin host a drop-in information table to get you on your way to becoming a Citizen Scientist using the free iNaturalist app that identifies and documents...

Free with Park Fee

Pima County Public Library: Earth Day Crafternoon!

Pima County Public Library - Quincie Douglas Library 1585 E. 36th St., Tucson

Join us for a fun afternoon of crafting up special gifts and goodies to celebrate Earth Day! We will provide all crafting supplies and snacks to fuel your creativity!

Free

Pima County Public Library: LEGO Club | Club de LEGO

Pima County Public Library - Quincie Douglas Library 1585 E. 36th St., Tucson

Let’s play with LEGOS! Every Saturday you can build something new. Show off your creativity and STEAM (Science, Technology, Engineering, Art and Math) skills and have tons of fun! ¡Juguemos con LEGOS! Cada sábado puedes construir algo nuevo. ¡Demuestra tu creatividad y habilidades de STEAM (Ciencia, Tecnología, Ingeniería, Arte y Matemáticas) y diviertete muchísimo!

Free

Embry – Riddle Aeronautical University: Whale Super Highway

Embry - Riddle Aeronautical University Jim and Linda Lee Planetarium 3700 Willow Creek Rd., Prescott

Show Times: Saturday, April 19: 2 p.m., 3 p.m. and 4 p.m. Whale Super Highway follows humpback whales and blue pygmy whales on their 4,000-mile migration down the coast of Western Australia to the freezing waters of Antarctica and back again. Once hunted to the brink of extinction, humpback whales have made an extraordinary recovery....

$7.50

Yuma County Library District: Earth Day – Nature Prints

Yuma County Library District - Main Library 2951 S. 21st Dr., Yuma

Join us for Nature Prints this Earth Day! Celebrate the beauty of nature by exploring, creating, and printing unique designs on clay using leaves, flowers, and other natural materials. For teens ages 13 -17 years old - come make your own Earth-inspired masterpiece! First come first serve, while supplies last.

Free

Phoenix Public Library: Design Space 101

Phoenix Public Library - Cholla Library 10050 Metro Parkway E., Phoenix

Cricut curious? Learn how to use Design Space to create a variety of paper crafts on the Cricut Joy or Maker. Join us at Cholla Library's Mach2 for an introduction to Cricut! Each week will feature a different beginner craft you can take home. Sign up - Space is limited!   Please note: Intermediate computer skills...

Free

Flandrau Science Center & Planetarium: Tucson Sky & Beyond

Flandrau Science Center & Planetarium 1601 E. University Blvd., Tucson

Take a relaxing look at the night sky as one of our skilled "Console Captains" gives you a guided tour of the stars, planets, constellations and current events happening in the night sky. Audience: General, all ages Style: Live presentation about constellations and astronomy Planetarium Tickets Adults: $14 Children (ages 3-15): $10 Children ages 2 and under:...

Free – $14

Southeastern Arizona Bird Observatory: Hummingbird Banding at the San Pedro House

San Pedro House 9800 Highway 90, Sierra Vista

Up to 10 species of hummingbirds use the green corridor of the San Pedro River as a freeway between their tropical winter retreats and their northern nesting grounds. The public is invited to get a close-up look at these tiny travelers as staff and volunteers from the Southeastern Arizona Bird Observatory capture, band, weigh, measure,...

Free

Mt. Lemmon SkyCenter: SkyNights StarGazing Program

Mt. Lemmon SkyCenter 9800 Ski Run Rd. Mt., Lemmon

Explore the night skies from the summit of Mt. Lemmon using Arizona's LARGEST publicly available telescopes!  Under the guidance of a professional, visitors will enjoy a brief astronomy lecture, a light dinner, and an exclusive opportunity to observe astronomical objects and phenomena.  This five-hour program starts 2 hours before sunset and accommodates up to 28...

$62.50 – $88.50

Arizona State Parks and Trails: Bat Walk

Kartchner Caverns State Park 2980 AZ-90, Benson

Kartchner Caverns invites you to join us for a walk in the park as we uncover and learn about some of the 13 different neighboring bat species in the park. We will use bat detectors while on a walk through the beautiful desert night to see and hear some of them while learning about the diversity of these flying mammals. Boldly go where the...

$15