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Who is JiJi? Meet the ST Math Penguin

You asked, we answered!

Throughout MIND Research Institute's 20 year history, we've received countless questions regarding ST Math's lovable penguin, JiJi. In celebration of JiJi culture and all the creative mathematical problem solvers, we put together a compilation of JiJi FAQs and interesting tidbits including various ways to stay connected with JiJi!

Who is JiJi?

JiJi (pronounced jee-jee, not the French zhee-zhee) is the beloved penguin in the ST Math software games. Students help JiJi overcome obstacles by solving math puzzles — and they associate JiJi with the thrill of challenge and success. JiJi crosses the screen every time a child demonstrates understanding of a math concept, leading the student to the next challenging puzzle.


5 Frequently Asked Questions About JiJi

Q: Is JiJi male or female?

A: JiJi does not have a specific gender so that students can assign attributes to JiJi that make sense to them and will support them in their mathematical journey with JiJi. It's okay to have your personal view on JiJi's gender, but please leave it open for students to develop their own views and theories.

Response to student: What gender do you think JiJi is?

Q: How old is JiJi?

A: Similar to gender, students can assign an age to JiJi.  For example, some students might want to see JiJi as younger and they need to help JiJi with math. Others might see JiJi as older, teaching and guiding them through math. Some see JiJi as exactly like them, working and learning together.

Response to student: How old do you think JiJi is?

Q: Who are JiJi’s friends?

A: One of JiJi’s closest friends is Paco, the tomato. Other friends include: Robot, Pie Monster, Starfish, Dog, Alien, Lobster, Ostrich and more.

Q: Why doesn’t JiJi wear clothes?

A: JiJi has blubber and feathers that help JiJi stay warm, even in the cold Antarctic weather, so JiJi doesn’t need to wear clothes.

Q: Why can't JiJi jump?

Although some penguins can jump, JiJi is a special non-jumping penguin species. JiJi needs your help to get past the obstacles on the screen.

Students Love JiJi

See why students all across the nation love learning and problem solving with JiJi! 


I would like to thank JiJi for making my math journey fun and exciting.

-Mieckol, Student

JiJi helps me on things I had trouble with in the classroom.

-Liz, Student

JiJi means a lot to me. ST Math is the greatest website I've ever seen.

-Larenz, Student

Connect with JiJi

Stay up to date on all of the math fun by following all of JiJi's adventures and ST Math news on social media. Make sure to join the conversation by using the hashtag #STMath! 

You can also shop all things JiJi by visiting our online JiJi Store.

To learn more about ST Math visit us at

Edith Esparza

About the Author

Edith Esparza is the Marketing Specialist at MIND and loves sharing her passion for learning.


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