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Ongoing

Maricopa County Parks and Recreation: McDowell – Invasive Species Removal

McDowell Mountain Regional Park 16300 McDowell Mountain Park Dr. MMRP, Fountain Hills

Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks. Participants will learn to identify several invasive species, their phenology...

Free with Park Fee

Maricopa County Parks and Recreation: Maricopa County Parks and Recreation:

White Tank Mountain Regional Park 20304 W. White Tank Mountain Rd., Waddell

Join Park Volunteer Tom Locascio for a morning walk followed by an informational program in the Nature Center about the birds of White Tank Mountain Regional Park! Join experienced birder and Park Volunteer Tom Locascio—a proud member of the Audubon Society and Sun City Birding Club—for a guided bird walk through White Tank Mountain Regional...

Free with Park Fee

Maricopa County Parks and Recreation: City Nature Challenge Hike

Usery Mountain Regional Park 3939 N. Usery Pass Rd., Mesa

Join Ranger Jacque on a brief hike and use your phone to document biodiversity in the park for the City Nature Challenge global Citizen Science competition. Citizen Science Month 2026 is an official partner of America 250, the campaign to celebrate the United States of America’s semiquincentennial anniversary.   The City Nature Challenge is a global...

Free with Park Fee

Arizona State Parks & Trails: Geology Tour at Oracle State Park

Oracle State Park 3820 E. Wildlife Dr., Oracle

Limited space, by reservation only! Did you know that Oracle State Park was once covered by warm, shallow seas? Are you familiar with the numerous faults that uncovered rocks once buried more than 5 miles beneath the surface?  The park offers visitors the opportunity to experience the unique geology of the Santa Catalina Mountains area. First,...

Free with Park Fee

Maricopa County Parks and Recreation: City Nature Challenge Hike

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

Join Ranger Nikki on a moderate hike and use your phone to document biodiversity in the park for the City Nature Challenge global Citizen Science competition that runs April 24-27. ...

Free with Park Fee

Arizona State Parks & 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

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

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

Date - Saturday, April 25, 2026, EARTH DAY LITTER PICK UP EVENT Time – 8:00 am -11:00 am Location – Lake Pleasant Regional Park, Main Entry.  Directions:  From central Phoenix,...

Free with Park Fee

Maricopa County Parks and Recreation: Beginning Birders Hike

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

Join Ranger Kevin for an introduction to birding in one of Arizona’s premiere birding locations.   Enjoy a roughly 2-mile walk on the Palm Lake, Mesquite Meander, Lions, and Willow Walkway...

Free with Park Fee

Phoenix Zoo: Earth Day

Phoenix Zoo 455 N. Galvin Pkwy., Phoenix

We have the power to save our planet! Join us for games and activities and learn about conservation and renewable energy!

Free with Admission

Reid Park Zoo: Sean Kenney’s Nature Pop!

Reid Park Zoo 3400 Zoo Court, Tucson

Part art. Part engineering. Totally amazing! Add a pop of wonder and a pinch of nostalgia to your spring with Sean Kenney’s Nature Pop! Marvel at over 40 wildly creative sculptures made entirely of LEGO® bricks at this exhibition, included with Zoo admission and free for Zoo members from 9 a.m. to 4 p.m. daily....

Free with Admission

Rio Salado Audubon Center: Nature Explorers

Nina Mason Pulliam Rio Salado Audubon Center 3131 S. Central Ave., Phoenix

Join us for a fun, family-friendly nature adventure at the Rio Salado Audubon Center! Families are invited to get outside, explore the trails and gardens, and discover wildlife that calls Rio Salado home. Enjoy an easy walk with plenty of chances to spot birds, insects, plants, and more. After the walk, stick around for hands-on...

Free

Cave Creek Museum: The Arizona Gold Mining Experience™

Cave Creek Museum 6140 E . Skyline Dr., Cave Creek

The Cave Creek Museum’s AZ GOLD MINING EXPERIENCE™ is unique with its display of the complete hard rock ore extraction process, with the mine shaft, tramway, ore carts, crushing and extraction, that are always on display, but operated only during these events. The highlight is Arizona’s only fully operational ten-stamp ore crushing mill. The ten 1,000-lb...

Free – $20

City of Mesa: Danger Scouts – LEGO Roboteering!

Red Mountain Multigenerational Center 7550 E. Adobe St., Mesa

Roboteers will build and program Classic LEGO Mindstorm NXT Robots and tackle real world situations on a small scale! From saving lives to cleaning your room, robots do it all!...

$67

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 & Trails: Apple Packing Shed Open House

Slide Rock State Park 6871 AZ-89A, Sedona

Experience a piece of Arizona history. Get an opportunity to explore the Pendley Homestead Apple Packing Shed. A ranger will be available to answer any questions about the homestead's history. Come and see the Bean Cutler 1933 Sorter and Bean Cutler Polisher added in 1946. Saturdays and Sundays from 10 a.m.-12 p.m. Resuming April 8,...

Free with Park Fee

AI Dev Bootcamp (Session 2)

Session 2 of a 4-part hands-on workshop series for software developers. Continue building practical skills with AI-assisted development tools. Scholarships available.

$20

Boyce Thompson Arboretum: Arbor Day

Boyce Thompson Arboretum 37615 E. Arboretum Way, Superior

Join us at Boyce Thompson Arboretum for our third annual Arbor Day Celebration as we honor and celebrate the amazing world of trees! Families can enjoy a variety of tree-themed...

Free with Admission

Arizona State Parks & Trails: Saturday 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. This program is weather dependent. Meet at...

Free with Park Fee

Arizona State Parks & Trails: Picnic with the Pendleys

Slide Rock State Park 6871 AZ-89A, Sedona

Join us for a fun spring event to learn more about the Friends of Slide Rock State Park and see the beautiful apple tree blossoms! Hear from a ranger about the historic orchards and the cycle of apples. At 10 a.m., there will be a ranger-led walk through the orchard. At 11 a.m., Kathy Pendley...

Free with Park Fee

Maricopa County Parks and Recreation: City Nature Challenge Hike

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

Join Ranger Kevin to learn about and document biodiversity in the park for the City Nature Challenge global Citizen Science competition that runs April 24-27th .   The City Nature Challenge is a global competition between cities to document biodiversity in regions around the world, taking place April 24-27th. Ranger Kevin will lead a hike with stops...

Free with Park Fee

Greater Phoenix City Nature Challenge 2026: Sustainability Fest

Arizona Science Center 600 E. Washington St., Phoenix

Discover how to live life more sustainably at Arizona Science Center’s Sustainability Fest Explore topics like rising seas, how to reduce your carbon footprint, composting and recycling, seed germination, and...

Free with Admission

Flandrau Science Center & Planetarium: Extreme Weather

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

Extreme Weather takes you to the front lines of our planet’s most intense natural forces—from melting glaciers and massive tornadoes to raging wildfires. Stunning visuals and expert insight reveal how climate change fuels these powerful, interconnected events. Audience: General, all ages Style: IMAX film adapted for planetarium + Earth science talk     All-Inclusive Planetarium...

Free – $27

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

Playful Digital Learning: Minecraft 202 – Build & Design

Online

This one-time class gives students unique challenges to test their Minecraft building and design skills. Students will work either in a group or by themselves to create a build according to theme. One class students may be amusement park tycoons; the next, a minigame host; another, pirates with their own working cannons! Each week, we...

$18

Phoenix Public Library: Family Fun

Phoenix Public Library - Desert Sage Library 7602 W. Encanto Blvd., Phoenix

Ready for fun?  Join us every week for a different family activity, such as STEM, art, games, or brick-building. ¿Listo para la diversión? Familias, únanse a nosotros cada semana para una actividad diferente, como STEM, arte, juegos, o construcción de ladrillos de colores.

Free

Flandrau Science Center & Planetarium: Black Holes

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

Journey into the mysterious world of black holes in this visually stunning, immersive show. Featuring cosmic simulations and narrated by Liam Neeson, explore star birth and death, colliding galaxies, and a thrilling dive into our galaxy’s core. Audience: General, all ages Style: Fulldome film + live star talk      All-Inclusive Planetarium Show Tickets Show...

Free – $27

City of Tempe: LEGO® Roboteering

Clark Park Community Center 1730 S. Roosevelt St., Tempe

Roboteers will build and program Classic LEGO® Mindstorm NXT Robots. Roboteers will program their robots to tackle fun, motor-churning challenges. We’ll put our heads together with a world-class roboteer and have fun while we explore and learn the ABC's of NXT coding! Challenges change every class.   Ages 9 - 14

$42

Phoenix Public Library: MACH2 – 3D Printing

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

A perfect program for techy kids and teens! Create your own design in the powerful 3D art program, TinkerCAD. Watch as your design comes to life right before your eyes as we print it using our own 3D Printers! This Month's Design is: Pencil Toppers Please note: Space is limited. Please arrive early to secure...

Free

Flandrau Science Center & Planetarium: Tucson Sky & Beyond

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

Sit back and relax for this popular live show as one of our Console Captains guides you through the night sky from a Tucson perspective, pointing out stars, planets, constellations, and current celestial events. Then, take a cosmic leap beyond our solar system to explore the universe’s distant wonders. Audience: General, all ages Style: Live...

Free – $27

Playful Digital Learning: Minecraft 202 – Build & Design

Online

This one-time class gives students unique challenges to test their Minecraft building and design skills. Students will work either in a group or by themselves to create a build according to theme. One class students may be amusement park tycoons; the next, a minigame host; another, pirates with their own working cannons! Each week, we...

$18

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...

$62.50 – $88.50

Arizona State Parks & 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

⭐Gilbert Rotary Centennial Observatory: Astronomy Observation

Riparian Preserve at Gilbert Water Ranch 2757 E. Guadalupe Rd., Gilbert

Come view the stars during the Arizona SciTech Festival! Fun for the whole family, located at the Gilbert Riparian Preserve. East Valley Astronomy Club members staff operations and programming for...

Free