扩展与约简分数转换为小数
几何画板及绘图内容加载中,请稍等……
①本范例演示如何通过扩展与约简分数将其转换为小数形式;②涉及的核心数学概念包括分数的扩展与约简、小数表示、分数与小数的关系;③作图要点——从下方『构造摘要』提炼用到了哪些 GeoGebra 命令/对象:If, SpeechBubbleRight, Polygon, IsInRegion, Corner, SpeechBubbleLeft, Textfield, Segment, SelectedIndex, CircleArc, Point, Vector;④适合的学段或用途:本范例适合小学5-6年级学生,用于理解和掌握分数的扩展与约简以及分数与小数的转换,通过可视化帮助理解抽象概念。
GeoGebra 命令及参数
If(move ≟ 5, bInput ≟ solB(1), If[move ≟ 7, bInput ≟ solB(2), If[move ≟ 9, bInput ≟ solB(3), If[move ≟ 11, bInput ≟ solB(4), bInput ≟ solB(5)]]]) → c5If(move ≟ 4 ∨ move ≟ 5, aInput ≟ solA(1), If[move ≟ 6 ∨ move ≟ 7, aInput ≟ solA(2), If[move ≟ 8 ∨ move ≟ 9, aInput ≟ solA(3), If[move ≟ 10 ∨ move ≟ 11, aInput ≟ solA(4), If[move ≟ 12 ∨ move ≟ 13, aInput ≟ solA(5)]]]]) → c4SpeechBubbleRight(C, 7.7, 2) → poly1Polygon(D, E, F, G) → box1, d, e, f, gPolygon(H, I, J, K) → box2, h, i, j, kPolygon(L, M, N, O) → box3, l, m, n, oIsInRegion(Point1, box1) → c1IsInRegion(Point2, box2) → c2IsInRegion(Point3, box3) → c3Corner(text5, 4) → SCorner(text5, 1) → TCorner(text5, 2) → UCorner(text5, 3) → VPolygon(S, T, U, V) → umrand1, s, t, u, vCorner(text6, 4) → WCorner(text6, 3) → ZCorner(text6, 2) → A_1Corner(text6, 1) → B_1Polygon(W, Z, A_1, B_1) → umrand2, w, z_1, a_1, b_1Corner(text7, 4) → C_1Corner(text7, 3) → D_1Corner(text7, 2) → E_1Corner(text7, 1) → F_1Polygon(C_1, F_1, E_1, D_1) → umrand3, c_1, f_1, e_1, d_1SpeechBubbleRight(I_1, 5.5, 2) → poly2SpeechBubbleLeft(L_1, 7.3, 1) → poly3Textfield(aInput) → InputBox1Segment(M_1, N_1) → pSpeechBubbleLeft(L_1, 10.2, 1.3) → poly4Textfield(bInput) → InputBox2SpeechBubbleLeft(L_1, 6.5, 1) → poly5SpeechBubbleLeft(O_1, 7.3, 1.5) → poly6Textfield(cInput) → InputBox3Textfield(dInput) → InputBox4SpeechBubbleLeft(R_1, 11, 2.3) → poly7SelectedIndex(l1) → index1SelectedIndex(l2) → index2SelectedIndex(l3) → index3SpeechBubbleRight(I_2, 10.8, 1.1) → poly8SpeechBubbleRight(I_2, 9.5, 1.1) → poly9Corner(text39, 1) → J_2Corner(text39, 2) → K_2Corner(text39, 3) → L_2Corner(text39, 4) → M_2Polygon(J_2, K_2, L_2, M_2) → umrand4, j_2, k_2, l_2, m_2Corner(text40, 1) → N_2Corner(text40, 2) → O_2Corner(text40, 3) → P_2Corner(text40, 4) → Q_2Polygon(N_2, O_2, P_2, Q_2) → umrand5, n_2, o_2, p_2, q_2Corner(text41, 1) → R_2Corner(text41, 2) → S_2Corner(text41, 3) → T_2Corner(text41, 4) → U_2Polygon(S_2, T_2, U_2, R_2) → umrand6, s_2, t_2, u_2, r_2IsInRegion(Point1_2, box1) → c7IsInRegion(Point2_2, box2) → c8IsInRegion(Point3_2, box3) → c9CircleArc(V_2, W_2, Z_2) → cPoint(c) → A_3Vector(A_3, B_3) → aTextfield(eInput) → InputBox5Textfield(fInput) → InputBox6CircleArc(C_3, D_3, E_3) → qPoint(q) → F_3Vector(F_3, G_3) → bSegment(M_1 - (0.1, 0), N_1 + (0.1, 0)) → p_1
AI 绘图提示语参考
画一个包含五个方框的图形,每个方框内有一个文本提示。第一个方框显示“将分数转换为小数”,第二个方框显示“扩展分数”,第三个方框显示“简化分数”,第四个方框显示“分数与小数的关系”,第五个方框显示“练习题”。每个方框由四个角点组成,角点之间用线段连接。每个方框内还有相应的文本提示,提示用户如何进行分数和小数的转换。
以上提示语为根据原始绘图命令整理而来,仅供参考。