The problem set
308 core problems. Each one with layered nudges that guide you towards the answer if you need help, an answer check and a fully worked step-by-step solution. A subset of sample problems is available below.
Open all 308.
Open all 308 problems. The stems, four to five layered nudges each, answers and full worked solutions, with your progress following you across devices. Three ways in, from the book to the full platform.