Instead of expecting learners to memorize everything, use conduit learning design, which leads them to quickly find what they need when they need it.
"The group of reporters waited while an Edison question, ‘What is the speed of sound?' was translated into German. Einstein's answer was translated into English. ‘I don't know offhand,' he said. ‘I don't carry information in my mind that's readily available in books.'"
—Denis Brian, Eins