If the kids are out of school and missing homework, or you're tired of them playing Fortnite, here are seven fun projects they can get involved with courtesy of the National Science Foundation.

1. Use on-the-go science tools to explore the world around you (all ages)

Foldscopes are paper microscopes that give you a deeper look at the world around you. Peer at the cell structure in an onion's skin, examine a human hair or look at the busy microbial world of pond scum.

2. Become a citizen scientist and help collect and analyze data for scientific research (all ages).

Find a project near you or online with the SciStarter website, which has more than 3,000 active projects, including the Earth Challenge 2020.

Older kids might enjoy the NSF-funded documentary The Crowd and the Cloud, about the impact that technology-enabled citizen scientists are making in the world. 

Zooniverse allows anyone to help scientists classify galaxies. Researchers, with the help of Zooniverse volunteers, can analyze information more quickly and accurately than when working alone. 

3. Learn to code using Scratch (ages 8-16) or ScratchJr (ages 5-7).

With Scratch, kids can program their own interactive stories, games and animations and share their creations with an online community. 

4. Explore art and science through the Colors of Nature project (ages 11 and up).

Explore the creativity of science through a series of education kits that highlight how art and science work together to help us understand the world. The activities in the kits promote observation and the use of household items to explore color through the lens of chemistry, biology and optics.

5. Keep math skills sharp using GeoGebra (ages 13 and up).

GeoGebra is mathematics software for all levels of education that brings together geometry, algebra, spreadsheets, graphing, statistics and calculus in one easy-to-use package. 

6. PBS (ages 3- 13)

Many of the science shows on PBS also have websites full of games and activities that allow kids to get creative and dive deeper into STEM concepts.

Peep and the Big Wide World -- one of the first STEM-focused shows for preschool-aged children -- has a parents page full of resources, such as how to organize a neighborhood safari, how to teach STEM concepts anywhere, and videos about how to help support your child's development and learning style.

Cyberchase has a 3D-builder math app and dozens of downloadable math and computing-based activities. SciGirls has interactive games on its kids' site, and resources for parents on how to encourage girls in STEM.

Design Squad has videos and activities to engage children aged 10 to 13 in hands-on engineering.

With NOVA's Topic Earth, parents and children can explore a range of videos from "Ancient Arctic Animals" to "What it is Like to Live in Antarctica."

7. 4 Awesome Discoveries You Probably Didn't Hear About! (ages 13 and up)

From odd-looking animals to singing robots, some of the most incredible news never makes it to the front page. Exploring the top stories in science and tech, 4 Awesome Discoveries