Build math confidence with capybara friends and Mrs. Kraska, your encouraging teacher coach. Practice signed numbers, fractions, absolute value, coordinates, reflections, and perimeter.
Explore the math games ↓
A little practice grows confidence.Capy Study Club offers free, browser-based math practice. Its current game, Kraskas Capybara Carts, helps sixth-grade students practice six math topics with Mrs. Kraska, a friendly capybara teacher coach. Hints, worked answers, and growth-mindset encouragement make room for mistakes and another try.
Choose a guided Sprout level, a mixed-format Bloom level, or a Challenge level. Play solo or take turns with 2–4 players on one device. Collect apples, unlock capybara characters, and earn power-ups as you practice. There is no timer and no lost lives.
Practice positive and negative numbers, opposites, integers, rational numbers, temperatures, and money changes.
Compare and order rational numbers, convert fractions to decimals, and understand negative mixed numbers.
Find distances from zero and evaluate expressions with absolute value, subtraction, multiplication, and outside minus signs.
Plot ordered pairs, identify quadrants and axes, and find horizontal and vertical distances.
Reflect points across the x-axis or y-axis and find missing rectangle corners.
Find rectangle, square, and L-shape perimeters, missing side lengths, and measurements using a scale.
Yes, the game is free. You do not need an account, and there are no in-game purchases. Names, progress, unlocked capybaras, and high scores are saved in your browser on this device for this site. They do not automatically sync to another browser, device, or website address.
The current game focuses on grade 6 math: signed numbers, fractions and decimals, absolute value, coordinate planes, reflections, and perimeter. Sprout, Bloom, and Challenge offer three difficulty levels across 66 question templates.
Press Start playing near the top of the page to begin a solo adventure with the default settings. To customize first, choose your players, level, adventure length, and capybara, then press Start game. Tap an open math cart to answer your first question.
Yes. The game works in modern phone, tablet, and desktop browsers with JavaScript enabled. Use the on-screen +/− button when an answer needs a negative number. For friends, choose 2–4 players and take turns sharing one device; every player gets the same number of turns.
You can try again, ask for a hint, or read the worked steps. Mrs. Kraska encourages you to use feedback and adjust your strategy. You can also skip a question without earning apples, and its topic appears in your practice recap.
Correct answers earn apples toward capybara characters in the shared Capy Closet. Each player starts an adventure with a Glow Hint, Retry Bubble, and Double Apples power-up. Every three solved questions earns a bonus power-up. New rewards appear on screen, and you can wear a newly unlocked capybara immediately.