ABGs NOW! Tic-Tac-Toe is a fun, interactive way to learn arterial blood gases! It provides two modes, challenge and practice, that use helpful colors and icons to guide you through the tic-tac-toe method. The app has three modes to help you in your mastery of ABGs interpretations. Challenge Mode Features: * Drag pieces to make Tic-Tac-Toe boards based on a given ABG outcome * Score points for each correctly placed piece * Misses result in decreased point values for the current interpretation * Game is over when the timer expires. Flash Card features: * Flash card is presented with a random set of values to interpret. * Tap card to reveal a detailed explanation of the correct answer. Practice Mode Features: * Drag and drop the ABG values to make a tic-tac-toe * Determine the cause * Decide if theres any compensation A final review gives you helpful feedback before going to the next problem. Its that easy! This app will not only save you time, but lots of scrap paper, too!