新课程·上旬
新課程·上旬
신과정·상순
Xinkecheng
2014年
10期
88-88
,共1页
圆%周长%圆周率
圓%週長%圓週率
원%주장%원주솔
circle%perimeter%circumference
在已经认识圆的基本特征的基础上,引导学生自主探索,通过测量计算并发现圆的周长与直径的关系,理解圆周率的意义,推导并掌握圆周长的计算公式,能利用公式解决相应的实际问题。
在已經認識圓的基本特徵的基礎上,引導學生自主探索,通過測量計算併髮現圓的週長與直徑的關繫,理解圓週率的意義,推導併掌握圓週長的計算公式,能利用公式解決相應的實際問題。
재이경인식원적기본특정적기출상,인도학생자주탐색,통과측량계산병발현원적주장여직경적관계,리해원주솔적의의,추도병장악원주장적계산공식,능이용공식해결상응적실제문제。
On the basic features of circle, the teacher guides students to explore points independently by measuring the calculation and finding the relationship between a circle and the diameter, then understand the meaning of the circumference and master the perimeter of the derived formulas, use the formula to solve practical problems according to the knowledge.