Excuse me, how to do the math knowledge tree in the second volume of the fifth grade of People's Education Press? thank you
Draw a tree and divide it into four branches, and write numbers and algebra, space and graphics, statistics and probability, practice and comprehensive application respectively. Number and algebra are divided into three branches, space and graphics are divided into two branches, statistics and probability are divided into one branch, and practice and comprehensive application are divided into two branches. Then write down the knowledge points of this unit.