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Educational apps are a great and fun way to keep your kids learning outside of the classroom, but the cost can add up fast. Luckily, there are some free apps for kids that are both educational and fun but won't break the bank.

Poptropica

Ages 6 to 12 For Android and iOS

This free story-based game allows kids to customize their own characters, complete quests and play with friends in a safe environment. Kids love creating their avatars and finishing game tasks for prizes.

Coolmath Games

Ages 13 and up For Android and i0S

Coolmath Games features math activities and games for anyone ages 13 to 100. Coolmath Games is a brain-training app, where logic & thinking meet fun and games. These games have no violence, no empty action, just a lot of challenges that will make you forget you're getting a mental workout!

Science360

Ages 12 and up For Android and iOS

The National Science Foundation's Science360 app(for tablets only) brings cutting-edge science and engineering news, images, and video right to your child's fingertips. All content is gathered from scientists and universities around the world, so you can be assured that your child is receiving the best quality information out there.

NASA Visualization Explorer

Ages 7 and up For iOS

NASA Visualization Explorer is the coolest way to explore the latest news and stories about the Earth, the sun, and the universe. The app features amazing images and video from space and animations that can make challenging concepts easier to understand. Your young kids can begin learning about the planets and stars with this app.

21. What is special about Coolmath Games?

A. It helps train kids' mind.      B. It is easy to play its games.

C. It is full of action scenes.     D. It is only targeted at teenagers.

22. What is a kid keen on space advised to do from the passage?

A. Travel to planets and stars.                 B. Create amazing images and videos.

C. Explore relevant news and stories online.     D. Use NASA Visualization Explorer.

23. What do the listed apps have in common?

A. They are impressive to parents.     B. They are only played on tablets.

C. They are all free of charge.         D. They are all for 10S and Android.