PhET Simulations vs Num Trainer

Engage in learning science and math with the award-winning PhET simulations! Whether understanding atoms, exploring energy, or mastering multiplication, there is a sim for every learner. Perfect for at home, in class, or on the road, this app delivers all PhET HTML5 sims (over 75 sims) in one easy-to-use package. Developed by experts at the University of Colorado Boulder, PhET sims are used by millions of students every year. The PhET iPad app delivers these exclusive features: • Offline play: learn on the bus or at the park without a WiFi connection. • Multiple languages: app translate in many languages (great for bilingual learners). • Favorites: pick your favorite sims and create your own custom collection. • Automatic updates: get the latest HTML5 sims as soon as they are released. • Easy sorting: find the right sims for you. • Fullscreen: maximize your screen real estate for optimal sim exploration. PARENTS: Engage your child in science and math discovery. TEACHERS: Your favorite HTML5 sims at your fingertips, even without internet access. ADMINISTRATORS: Optimized for school use, so your teachers will be seamlessly up to date. STUDENTS: Tell your parents there’s an exciting app for learning science and math. Note: The app does not include PhET’s Java or Flash sims. In addition, although we are currently working on improving the accessibility of our sims, most of the sims included in this app do not include keyboard navigation or screen reader access. As accessible sims become available, they will be updated within the app. Proceeds from the app support the development of more HTML5 sims. On behalf of the PhET team and the students whose lives you have helped improve — Thank you!

Num Trainer is a brain training app for faster number skills. Four focused games build attention, memory, reaction speed, mental math and logic in short sessions you can fit into any day. NEW: GLOBAL LEADERBOARDS Sign in to Game Center and your fastest times are ranked worldwide. There is a leaderboard for every game and every difficulty, so you always compete on equal rules. Not signed in? Everything still works and your records stay on your device. FOUR TRAINING GAMES • Mental Math – solve addition, subtraction, multiplication and division against the clock, from Beginner to Expert. • Number Pairs – memorise card positions and match every identical pair. • Tap in Order – a Schulte-table style challenge: find and tap numbers from smallest to largest as fast as you can. • Digit-by-Digit Math – remember a number, then transform each digit with the same step. TRACK YOUR PROGRESS Training History charts your latest, best and median time for every game and difficulty. Open the record list to review each session and the exact settings you played. SIMPLE AND FOCUSED Clean, distraction-free design, light and dark appearance, English, Simplified Chinese, Spanish and Japanese. No ads, no in-app purchases and no account required.