HierarchyLeaves imply branches, branches trunks, and trunks roots ConfirmationAre you sure you want to proceed? ModularityWorking together is better ChunkingStep by step ConstraintEven learning trains can have tracks Flexibility-Usability tradeoffWith great power comes great responsibility IterationThere are no mistakes, just happy accidents PilotingGet ready for takeoff Progressive DisclosureA little goes a long way ControlHelp students help themselves Skip back to main navigation
