Secondly,we should pay more attention to the connection between facts and core concepts.
Paying more attention to core concepts doesn't mean ignoring learning of facts.Oppositely,we should preserve and employ those facts that are of great importance to understand core concepts.Otherwise,learning of abstract knowledge would be a tree without roots and water without a source.However,facts-learning should not be the purpose,but the assistant of understanding concept.When learning the facts,we should focus on the connection with the core concepts.The right way is that centralizing the deep conceptual knowledge and developing the comprehensive ability based on the facts and develop understanding with the help of facts.For example,if we look at the American Revolution,then we can define transferable lessons of history that students can apply in their future study through the conceptual lens of dependence/independence.