Wonderopolis is a website that is full of fun, interactive STEM- and literacy-building topics boosted by Maker experiments. You can sign up for Camp Wonderopolis. This free online camp is geared to students in grades 2-8 and has different themes.

Little Bins for Little Hands is full of science experiments, science activities, and STEM challenges that are visually stimulating, hands-on, and sensory-rich for discovery and exploration! Also check out their quick and easy STEM activities.

Exploratorium is full of science activities that are hands-on, teacher-tested, and use cheap, available materials. Look on the left hand side of the website to explore other areas.

Science Buddies is full of hands-on STEM learning activities and experiments. Make ice cream in a bag or a cotton ball launcher. Turn milk into plastic and build robots from recycled materials.

Earth Rangers is a place to play eco-games and learn about conservation. They are offering a challenge to help save bees by planting a pollinator garden. By accepting their mission, they will mail you a free kit to plant your own pollinator garden.

PBS Kids Design Squad Nation is full of hands-on science and engineering videos, games and interactives.

Check out NASA's Space Place to learn more about the sun, earth, solar system, and universe. Look for games, crafts, activities, videos, and more. Play games and learn more about NASA and their astronauts at NASA's Kids Club.

Learn about weather, air, the ocean, fresh water, energy, plants, animals and more at NASA's Climate Kids.

Blobz Guide to Electric Circuits is a free interactive website on electric circuits. Through engaging cartoon animations and manipulatives, students learn how a circuit works.

This free Space Chef app is a fast-paced action game designed to provide the starting point needed to build healthy meals using simple, readily-available, and nutritious ingredients. Space Chef requires quick thinking and even quicker fingers as you race against the clock to sort through an array of ingredients and construct healthy recipes. Along the way, you’ll unlock food factoids, discover new Space Chef robots, and have access to over 60 healthy recipes.

Monster Medic is a free app that is an adventure game where you must help diagnose a friendly monster named Ragnar and guide him on his path to a healthier life. Through animations, simulations, achievements, and arcade games, you will learn about cardiovascular conditions and what steps can be taken to keep you and your monster healthy.

DIY Sun Science, funded by NASA, includes over a dozen, easy to use, hands-on activities to learn about the Sun. Each activity includes step-by-step instructions that have been tested by educators, kids, and families. The activity materials are widely available and inexpensive—you probably have many of them in your home.