正还是负?整数减法判断练习

正还是负?整数减法判断练习
几何画板及绘图内容加载中,请稍等……
2025-04-29 01:31
本范例设计了一个交互式练习,让学生在8道随机生成的整数减法题目中判断结果是正数还是负数。核心数学概念包括整数的减法运算、负数的意义及数轴上的加减法。作图要点:使用Random命令生成随机整数作为被减数和减数,通过If条件判断结果正负,用Textfield和Text命令呈现题目和选项,配合btnValidate按钮实现答案验证,attemptCount和correctCount记录作答情况,适合七至八年级学生巩固整数减法运算技能的课堂练习。

GeoGebra 命令及参数

  1. Flatten(Sequence[Shuffle[{1, 2, 3, 4, 5, 6}], k, 1, floor(100 / 6)]) → CaseList
  2. If(Case ∈ {1, 2, 4}, option1, option2) → correct
  3. Sequence(Random[1, 10], i, 1, 10) → randomNumbers, {8, 4, 1, 3, 6, 8, 2, 3, 2, 6}
  4. Element(randomNumbers, Mod[questionCount, Length[randomNumbers]] + 1) → randomNumber
  5. Textfield(input) → inputBox
  6. Join({Sequence[Segment[Corner[4] + (RasterPixMat * ((k * RasterStepXY), 0)), Corner[4] + (RasterPixMat * ((k * RasterStepXY), RasterMaxY))], k, 0, RasterMaxX / RasterStepXY], Sequence[Segment[Corner[4] + (RasterPixMat * (0, (k * RasterStepXY))), Corner[4] + (RasterPixMat * (RasterMaxX, (k * RasterStepXY)))], k, 0, RasterMaxY / RasterStepXY]}) → RasterStrecken
  7. Join({Sequence[Text[UnicodeToLetter[65 + k], Midpoint[Corner[4] + (RasterPixMat * ((k * RasterStepXY), RasterMaxY)), Corner[4] + (RasterPixMat * (((k + 1) * RasterStepXY), RasterMaxY))], false, true, 0, -1], k, 0, RasterMaxX / RasterStepXY - 1], Sequence[Text[("" * k), Midpoint[Corner[4] + (RasterPixMat * (RasterMaxX, ((k - 1) * RasterStepXY))), Corner[4] + (RasterPixMat * (RasterMaxX, (k * RasterStepXY)))], false, true, 1, 0], k, 1, RasterMaxY / RasterStepXY]}) → RasterBeschriftung
  8. Sequence(Sequence[Corner[4] + (RasterPixMat * ((k * RasterStepXY), (m * RasterStepXY))), k, 0, RasterMaxX / RasterStepXY], m, 0, RasterMaxY / RasterStepXY) → RasterPunkte, {{(-0.3200000000000001, 10.360000000000001), (0.6825062656641607, 10.360000000000001), (1.6850125313283215, 10.360000000000001), (2.6875187969924816, 10.360000000000001), (3.690025062656643, 10.360000000000001), (4.692531328320803, 10.360000000000001), (5.695037593984964, 10.360000000000001), (6.697543859649125, 10.360000000000001), (7.700050125313286, 10.360000000000001), (8.702556390977445, 10.360000000000001), (9.705062656641607, 10.360000000000001), (10.707568922305768, 10.360000000000001), (11.710075187969927, 10.360000000000001), (12.712581453634089, 10.360000000000001), (13.71508771929825, 10.360000000000001), (14.71759398496241, 10.360000000000001), (15.720100250626572, 10.360000000000001)}, {(-0.3200000000000001, 9.35665551839465), (0.6825062656641607, 9.35665551839465), (1.6850125313283215, 9.35665551839465), (2.6875187969924816, 9.35665551839465), (3.690025062656643, 9.35665551839465), (4.692531328320803, 9.35665551839465), (5.695037593984964, 9.35665551839465), (6.697543859649125, 9.35665551839465), (7.700050125313286, 9.35665551839465), (8.702556390977445, 9.35665551839465), (9.705062656641607, 9.35665551839465), (10.707568922305768, 9.35665551839465), (11.710075187969927, 9.35665551839465), (12.712581453634089, 9.35665551839465), (13.71508771929825, 9.35665551839465), (14.71759398496241, 9.35665551839465), (15.720100250626572, 9.35665551839465)}, {(-0.3200000000000001, 8.353311036789298), (0.6825062656641607, 8.353311036789298), (1.6850125313283215, 8.353311036789298), (2.6875187969924816, 8.353311036789298), (3.690025062656643, 8.353311036789298), (4.692531328320803, 8.353311036789298), (5.695037593984964, 8.353311036789298), (6.697543859649125, 8.353311036789298), (7.700050125313286, 8.353311036789298), (8.702556390977445, 8.353311036789298), (9.705062656641607, 8.353311036789298), (10.707568922305768, 8.353311036789298), (11.710075187969927, 8.353311036789298), (12.712581453634089, 8.353311036789298), (13.71508771929825, 8.353311036789298), (14.71759398496241, 8.353311036789298), (15.720100250626572, 8.353311036789298)}, {(-0.3200000000000001, 7.349966555183947), (0.6825062656641607, 7.349966555183947), (1.6850125313283215, 7.349966555183947), (2.6875187969924816, 7.349966555183947), (3.690025062656643, 7.349966555183947), (4.692531328320803, 7.349966555183947), (5.695037593984964, 7.349966555183947), (6.697543859649125, 7.349966555183947), (7.700050125313286, 7.349966555183947), (8.702556390977445, 7.349966555183947), (9.705062656641607, 7.349966555183947), (10.707568922305768, 7.349966555183947), (11.710075187969927, 7.349966555183947), (12.712581453634089, 7.349966555183947), (13.71508771929825, 7.349966555183947), (14.71759398496241, 7.349966555183947), (15.720100250626572, 7.349966555183947)}, {(-0.3200000000000001, 6.346622073578595), (0.6825062656641607, 6.346622073578595), (1.6850125313283215, 6.346622073578595), (2.6875187969924816, 6.346622073578595), (3.690025062656643, 6.346622073578595), (4.692531328320803, 6.346622073578595), (5.695037593984964, 6.346622073578595), (6.697543859649125, 6.346622073578595), (7.700050125313286, 6.346622073578595), (8.702556390977445, 6.346622073578595), (9.705062656641607, 6.346622073578595), (10.707568922305768, 6.346622073578595), (11.710075187969927, 6.346622073578595), (12.712581453634089, 6.346622073578595), (13.71508771929825, 6.346622073578595), (14.71759398496241, 6.346622073578595), (15.720100250626572, 6.346622073578595)}, {(-0.3200000000000001, 5.343277591973243), (0.6825062656641607, 5.343277591973243), (1.6850125313283215, 5.343277591973243), (2.6875187969924816, 5.343277591973243), (3.690025062656643, 5.343277591973243), (4.692531328320803, 5.343277591973243), (5.695037593984964, 5.343277591973243), (6.697543859649125, 5.343277591973243), (7.700050125313286, 5.343277591973243), (8.702556390977445, 5.343277591973243), (9.705062656641607, 5.343277591973243), (10.707568922305768, 5.343277591973243), (11.710075187969927, 5.343277591973243), (12.712581453634089, 5.343277591973243), (13.71508771929825, 5.343277591973243), (14.71759398496241, 5.343277591973243), (15.720100250626572, 5.343277591973243)}, {(-0.3200000000000001, 4.339933110367892), (0.6825062656641607, 4.339933110367892), (1.6850125313283215, 4.339933110367892), (2.6875187969924816, 4.339933110367892), (3.690025062656643, 4.339933110367892), (4.692531328320803, 4.339933110367892), (5.695037593984964, 4.339933110367892), (6.697543859649125, 4.339933110367892), (7.700050125313286, 4.339933110367892), (8.702556390977445, 4.339933110367892), (9.705062656641607, 4.339933110367892), (10.707568922305768, 4.339933110367892), (11.710075187969927, 4.339933110367892), (12.712581453634089, 4.339933110367892), (13.71508771929825, 4.339933110367892), (14.71759398496241, 4.339933110367892), (15.720100250626572, 4.339933110367892)}, {(-0.3200000000000001, 3.3365886287625406), (0.6825062656641607, 3.3365886287625406), (1.6850125313283215, 3.3365886287625406), (2.6875187969924816, 3.3365886287625406), (3.690025062656643, 3.3365886287625406), (4.692531328320803, 3.3365886287625406), (5.695037593984964, 3.3365886287625406), (6.697543859649125, 3.3365886287625406), (7.700050125313286, 3.3365886287625406), (8.702556390977445, 3.3365886287625406), (9.705062656641607, 3.3365886287625406), (10.707568922305768, 3.3365886287625406), (11.710075187969927, 3.3365886287625406), (12.712581453634089, 3.3365886287625406), (13.71508771929825, 3.3365886287625406), (14.71759398496241, 3.3365886287625406), (15.720100250626572, 3.3365886287625406)}, {(-0.3200000000000001, 2.3332441471571883), (0.6825062656641607, 2.3332441471571883), (1.6850125313283215, 2.3332441471571883), (2.6875187969924816, 2.3332441471571883), (3.690025062656643, 2.3332441471571883), (4.692531328320803, 2.3332441471571883), (5.695037593984964, 2.3332441471571883), (6.697543859649125, 2.3332441471571883), (7.700050125313286, 2.3332441471571883), (8.702556390977445, 2.3332441471571883), (9.705062656641607, 2.3332441471571883), (10.707568922305768, 2.3332441471571883), (11.710075187969927, 2.3332441471571883), (12.712581453634089, 2.3332441471571883), (13.71508771929825, 2.3332441471571883), (14.71759398496241, 2.3332441471571883), (15.720100250626572, 2.3332441471571883)}, {(-0.3200000000000001, 1.329899665551837), (0.6825062656641607, 1.329899665551837), (1.6850125313283215, 1.329899665551837), (2.6875187969924816, 1.329899665551837), (3.690025062656643, 1.329899665551837), (4.692531328320803, 1.329899665551837), (5.695037593984964, 1.329899665551837), (6.697543859649125, 1.329899665551837), (7.700050125313286, 1.329899665551837), (8.702556390977445, 1.329899665551837), (9.705062656641607, 1.329899665551837), (10.707568922305768, 1.329899665551837), (11.710075187969927, 1.329899665551837), (12.712581453634089, 1.329899665551837), (13.71508771929825, 1.329899665551837), (14.71759398496241, 1.329899665551837), (15.720100250626572, 1.329899665551837)}, {(-0.3200000000000001, 0.3265551839464855), (0.6825062656641607, 0.3265551839464855), (1.6850125313283215, 0.3265551839464855), (2.6875187969924816, 0.3265551839464855), (3.690025062656643, 0.3265551839464855), (4.692531328320803, 0.3265551839464855), (5.695037593984964, 0.3265551839464855), (6.697543859649125, 0.3265551839464855), (7.700050125313286, 0.3265551839464855), (8.702556390977445, 0.3265551839464855), (9.705062656641607, 0.3265551839464855), (10.707568922305768, 0.3265551839464855), (11.710075187969927, 0.3265551839464855), (12.712581453634089, 0.3265551839464855), (13.71508771929825, 0.3265551839464855), (14.71759398496241, 0.3265551839464855), (15.720100250626572, 0.3265551839464855)}, {(-0.3200000000000001, -0.6767892976588659), (0.6825062656641607, -0.6767892976588659), (1.6850125313283215, -0.6767892976588659), (2.6875187969924816, -0.6767892976588659), (3.690025062656643, -0.6767892976588659), (4.692531328320803, -0.6767892976588659), (5.695037593984964, -0.6767892976588659), (6.697543859649125, -0.6767892976588659), (7.700050125313286, -0.6767892976588659), (8.702556390977445, -0.6767892976588659), (9.705062656641607, -0.6767892976588659), (10.707568922305768, -0.6767892976588659), (11.710075187969927, -0.6767892976588659), (12.712581453634089, -0.6767892976588659), (13.71508771929825, -0.6767892976588659), (14.71759398496241, -0.6767892976588659), (15.720100250626572, -0.6767892976588659)}, {(-0.3200000000000001, -1.6801337792642173), (0.6825062656641607, -1.6801337792642173), (1.6850125313283215, -1.6801337792642173), (2.6875187969924816, -1.6801337792642173), (3.690025062656643, -1.6801337792642173), (4.692531328320803, -1.6801337792642173), (5.695037593984964, -1.6801337792642173), (6.697543859649125, -1.6801337792642173), (7.700050125313286, -1.6801337792642173), (8.702556390977445, -1.6801337792642173), (9.705062656641607, -1.6801337792642173), (10.707568922305768, -1.6801337792642173), (11.710075187969927, -1.6801337792642173), (12.712581453634089, -1.6801337792642173), (13.71508771929825, -1.6801337792642173), (14.71759398496241, -1.6801337792642173), (15.720100250626572, -1.6801337792642173)}}
  9. Random(1, 149, 100) → Number11, {72, 41, 79, 77, 9, 41, 104, 129, 19, 91, 21, 49, 73, 147, 34, 146, 117, 58, 118, 10, 17, 68, 14, 75, 9, 23, 100, 120, 116, 63, 85, 61, 32, 80, 115, 96, 30, 38, 98, 60, 134, 70, 35, 105, 89, 48, 15, 79, 120, 106, 75, 58, 48, 96, 143, 41, 49, 84, 111, 84, 63, 27, 17, 40, 87, 131, 122, 66, 63, 3, 56, 81, 136, 48, 144, 120, 55, 147, 55, 148, 32, 87, 66, 103, 30, 131, 63, 117, 19, 25, 77, 62, 94, 145, 56, 50, 90, 31, 9, 24}
  10. Random(2, 150, 100) → Number12, {29, 90, 150, 61, 54, 28, 65, 149, 2, 104, 30, 36, 82, 120, 40, 144, 17, 86, 58, 97, 133, 79, 137, 112, 83, 129, 64, 122, 26, 100, 37, 73, 58, 104, 27, 17, 93, 78, 109, 149, 68, 99, 139, 49, 91, 139, 69, 114, 15, 72, 10, 20, 18, 68, 73, 150, 98, 110, 20, 126, 120, 24, 24, 41, 23, 147, 12, 33, 41, 68, 9, 55, 20, 36, 133, 85, 75, 56, 27, 146, 128, 122, 99, 40, 104, 93, 61, 86, 106, 24, 115, 12, 104, 136, 40, 6, 3, 87, 60, 81}
  11. Random(1, 149, 100) → Number13, {109, 116, 113, 70, 47, 108, 3, 40, 23, 55, 44, 146, 70, 36, 128, 65, 122, 44, 74, 8, 128, 87, 53, 31, 144, 93, 18, 21, 130, 100, 61, 57, 106, 131, 105, 104, 51, 68, 1, 44, 17, 132, 149, 30, 87, 9, 139, 1, 33, 37, 133, 133, 27, 64, 113, 143, 26, 71, 101, 74, 33, 57, 19, 45, 27, 27, 2, 53, 100, 19, 89, 128, 24, 119, 93, 118, 3, 123, 140, 65, 113, 28, 134, 61, 64, 130, 106, 9, 131, 7, 114, 123, 115, 90, 65, 34, 73, 16, 74, 61}
  12. Random(-149, -1, 100) → Number14, {-116, -140, -47, -98, -100, -33, -110, -48, -4, -59, -138, -46, -69, -127, -103, -10, -74, -5, -113, -62, -111, -133, -131, -7, -42, -16, -139, -53, -125, -67, -79, -100, -124, -149, -65, -24, -94, -118, -88, -137, -93, -49, -8, -75, -20, -24, -27, -144, -134, -5, -66, -14, -59, -21, -43, -125, -48, -14, -130, -108, -148, -130, -114, -87, -62, -42, -5, -82, -63, -92, -123, -128, -120, -146, -20, -100, -77, -74, -147, -126, -45, -96, -7, -3, -13, -63, -86, -71, -94, -124, -107, -33, -9, -33, -84, -52, -55, -90, -7, -121}
  13. Random(-150, -2, 100) → Number15, {-22, -131, -146, -51, -30, -56, -75, -80, -42, -143, -59, -64, -126, -47, -140, -100, -86, -64, -72, -138, -26, -79, -47, -52, -80, -140, -91, -48, -37, -87, -120, -48, -82, -7, -60, -57, -146, -48, -132, -107, -11, -123, -21, -142, -59, -77, -49, -81, -56, -128, -137, -3, -143, -24, -148, -143, -66, -7, -62, -117, -92, -119, -11, -113, -98, -130, -69, -36, -34, -79, -4, -32, -14, -34, -60, -128, -96, -40, -72, -26, -140, -62, -146, -10, -31, -92, -137, -48, -41, -78, -108, -132, -58, -95, -101, -128, -27, -129, -41, -120}
  14. Random(-150, -1, 100) → Number16, {-125, -128, -134, -74, -19, -43, -147, -73, -49, -23, -141, -82, -62, -54, -91, -37, -130, -55, -105, -126, -64, -58, -138, -122, -42, -28, -124, -57, -105, -15, -136, -24, -33, -49, -122, -3, -14, -23, -22, -127, -119, -22, -24, -134, -115, -75, -108, -138, -112, -5, -57, -149, -95, -20, -132, -117, -112, -118, -66, -114, -118, -149, -28, -46, -35, -66, -121, -70, -67, -23, -26, -29, -9, -39, -20, -116, -51, -110, -60, -25, -13, -53, -89, -56, -101, -15, -139, -79, -31, -117, -21, -39, -109, -3, -10, -35, -4, -52, -72, -140}
  15. Sequence(Random[1, 150 - Number11(k)], k, 1, 100) → Number21, {50, 68, 21, 48, 119, 64, 28, 11, 97, 14, 26, 34, 45, 1, 47, 4, 28, 15, 23, 68, 26, 9, 12, 63, 8, 86, 19, 11, 18, 69, 25, 13, 34, 23, 10, 18, 6, 15, 51, 26, 12, 38, 56, 20, 59, 58, 37, 62, 26, 27, 47, 8, 16, 54, 5, 95, 99, 60, 34, 32, 49, 25, 7, 38, 34, 17, 25, 23, 11, 76, 54, 66, 12, 92, 5, 30, 5, 2, 82, 1, 58, 28, 68, 1, 17, 8, 42, 13, 101, 46, 15, 62, 54, 3, 71, 7, 56, 26, 124, 86}
  16. Sequence(Random[1, Number12(k) - 1], k, 1, 100) → Number22, {22, 76, 97, 41, 24, 10, 30, 148, 1, 55, 22, 8, 75, 44, 5, 81, 3, 67, 21, 37, 102, 36, 58, 43, 4, 21, 21, 65, 20, 36, 12, 70, 23, 3, 8, 14, 87, 15, 46, 4, 51, 56, 80, 17, 82, 65, 59, 65, 12, 50, 4, 8, 4, 21, 9, 108, 41, 3, 1, 102, 54, 8, 3, 3, 13, 10, 5, 28, 4, 51, 2, 37, 17, 25, 96, 46, 48, 15, 14, 132, 20, 51, 7, 1, 65, 88, 27, 5, 60, 5, 91, 9, 72, 48, 22, 5, 1, 82, 6, 58}
  17. Sequence(Random[Number13(k) + 1, 150], k, 1, 100) → Number23, {138, 147, 129, 141, 130, 138, 132, 94, 56, 87, 144, 147, 74, 125, 143, 89, 126, 145, 122, 79, 149, 140, 84, 112, 149, 144, 52, 91, 143, 117, 114, 129, 141, 146, 111, 150, 86, 123, 12, 111, 133, 135, 150, 120, 99, 46, 145, 143, 101, 98, 134, 138, 29, 119, 134, 149, 131, 88, 127, 149, 143, 104, 131, 106, 60, 106, 117, 84, 134, 124, 106, 141, 49, 129, 131, 141, 7, 136, 143, 132, 129, 45, 136, 92, 112, 134, 143, 41, 138, 124, 148, 146, 121, 102, 84, 74, 101, 112, 97, 128}
  18. Sequence(Random[abs(Number14(k)) + 1, 150], k, 1, 100) → Number24, {136, 146, 79, 141, 132, 44, 133, 139, 35, 103, 140, 99, 96, 142, 136, 78, 97, 124, 131, 83, 129, 142, 149, 103, 62, 41, 145, 88, 149, 111, 141, 103, 128, 150, 83, 55, 144, 141, 102, 146, 109, 130, 150, 134, 36, 57, 143, 149, 135, 131, 149, 124, 92, 138, 50, 133, 116, 62, 137, 127, 149, 140, 143, 108, 79, 82, 51, 127, 120, 130, 144, 147, 148, 149, 48, 140, 133, 106, 150, 150, 140, 139, 78, 66, 46, 67, 97, 119, 98, 137, 109, 48, 52, 146, 99, 117, 71, 96, 144, 145}
  19. Sequence(Random[1, abs(Number15(k)) - 1], k, 1, 100) → Number25, {8, 96, 51, 39, 24, 53, 5, 39, 4, 5, 12, 10, 71, 38, 85, 90, 67, 31, 39, 6, 25, 24, 43, 31, 39, 68, 33, 9, 3, 37, 39, 32, 3, 4, 14, 31, 118, 16, 31, 7, 1, 63, 19, 109, 58, 70, 7, 68, 52, 107, 26, 1, 27, 16, 35, 9, 21, 4, 30, 24, 80, 90, 9, 34, 31, 74, 61, 35, 3, 15, 3, 26, 9, 21, 2, 83, 5, 21, 30, 6, 104, 30, 33, 4, 8, 12, 81, 32, 31, 39, 39, 58, 49, 45, 47, 28, 25, 58, 23, 48}
  20. Sequence(Random[1, 150 - abs(Number16(k))], k, 1, 100) → Number26, {15, 22, 3, 6, 51, 77, 1, 21, 75, 105, 9, 2, 18, 38, 58, 21, 20, 20, 20, 9, 73, 45, 6, 9, 38, 30, 23, 76, 23, 101, 3, 64, 96, 20, 24, 34, 132, 4, 16, 5, 14, 87, 92, 13, 5, 75, 17, 11, 7, 31, 42, 1, 4, 12, 8, 10, 32, 25, 36, 19, 9, 1, 86, 24, 53, 65, 27, 10, 20, 33, 56, 37, 2, 41, 36, 4, 91, 26, 9, 42, 26, 63, 48, 51, 20, 23, 1, 1, 89, 26, 9, 25, 22, 42, 120, 107, 46, 69, 25, 8}
  21. Text(txtCalculation, RasterPunkte(3, 9), false, true, 0, 0) → txtCalc