Make room for a little more knowledge.

Capital cities around the world

Identify the country from its flag. Reveal, then self-grade.

Across various topics including history, science, geography, culture, and more

Recognize breeds. Learn about behaviors, anatomy, and origins of man's best friend.

Computer science, programming, hardware, software, and technology

Recognize and answer trivia about birds

Comic books, graphic novels, superheroes, manga, and comic book creators

Recall cards on the U.S. Congress. Institutional design: the Connecticut Compromise, the size, term, and age rules for the House and Senate, inherent powers, constituency, and majority-minority districts. Congressional elections:…

Read, write, and combine sets.

A time of castles, cold stone and some truly unfair plagues.

World history, including ancient civilizations, wars, historical figures, and important events

Recall cards on the descriptive chemistry of the representative elements: periodicity and the periodic behavior of the representative metals (alkali, alkaline earth, group 12, and the metals of groups 13 to 15, plus the inert pair effect…