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Subtraction Practice: 2.1 - 0.4 Visualized

Subtraction Practice: 2.1 - 0.4 Visualized
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2016-09-30 11:07
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① This example demonstrates the process of decimal subtraction 2.1 - 0.4 through an interactive visual interface, helping learners understand the meaning of subtraction. ② Core mathematical concepts include decimal subtraction, place value alignment, and result verification, involving basic arithmetic operations. ③ Construction highlights: GeoGebra commands such as Textfield create input boxes, One1 and Tenth1 represent ones and tenths places, AttachCopyToView pins text to the view; Check and ToggleGrid control checking and grid display, Answer and Clear buttons submit and reset, GuessValue and variables a, b store inputs, text1 shows prompts, A, poly1 and other objects build graphical representations, f, g, h etc. serve as auxiliary functions or curves, stroke1 draws strokes, and dynamic interaction enables subtraction practice. ④ Suitable for upper elementary math classes or home practice, reinforcing decimal subtraction concepts and calculation skills.

GeoGebra Commands & Parameters

  1. Textfield(a) → GuessValue
  2. One1(A) → poly1, f, g, h, i
  3. One1(B) → poly2, j, k, l, m
  4. Tenth1(D) → poly4, s, t, c, d
  5. AttachCopyToView(PolyLine[(2.8015111786809768, 3.3936222474437954), (2.8248584137962665, 3.3936222474437954), (2.848205648911556, 3.3936222474437954), (2.871552884026846, 3.3936222474437954), (2.9007369279209576, 3.3936222474437954), (2.92992097181507, 3.3936222474437954), (2.959105015709182, 3.3936222474437954), (2.9824522508244713, 3.3936222474437954), (3.005799485939761, 3.3936222474437954), (3.0291467210550507, 3.3936222474437954), true], 1, (-0.23362938630667396, 1.4266176889807005), (3.636174834052581, 4.222449094036554), (-62.76899373894558, 483.5603154033892), (600.2310062610543, 4.560315403389202)) → stroke1
  6. Tenth1(G) → poly7, m_1, n_1, p_1, q_1
  7. Tenth1(H) → poly8, r_1, s_1, t_1, a_1
  8. Tenth1(I) → poly9, b_1, c_1, d_1, e_1
  9. Tenth1(J) → poly10, f_2, g_2, h_2, i_2
  10. Tenth1(K) → poly11, j_2, k_2, l_2, m_2
  11. Tenth1(L) → poly12, n_2, p_2, q_2, r_2
  12. Tenth1(M) → poly13, s_2, t_2, a_2, b_2
  13. Tenth1(N) → poly14, c_2, d_2, e_2, f_3
  14. Tenth1(O) → poly15, g_3, h_3, i_3, j_3
  15. Tenth1(P) → poly16, k_3, l_3, m_3, n_3
  16. Tenth1(Q) → poly17, p_3, q_3, r_3, s_3
  17. Tenth1(R) → poly18, t_3, a_3, b_3, c_3
  18. Tenth1(S) → poly19, d_3, e_3, f_4, g_4
  19. Tenth1(T) → poly20, h_4, i_4, j_4, k_4
  20. One1(V) → poly5, e, f_1, g_1, h_1
  21. Tenth1(W) → poly3, n, p, q, r
  22. AttachCopyToView(PolyLine[(2.6672645767680616, 2.5297745481781035), (2.6847750031045288, 2.5239377393992815), (2.7256326645562856, 2.49475369550517), (2.7664903260080425, 2.4714064603898813), (2.813184796238622, 2.44222241649577), (2.8540424576903787, 2.4130383726016587), (2.90657373669978, 2.38969113748637), (2.9532682069303595, 2.3546702848134364), (2.9941258683821164, 2.3313230496981476), (3.023309912276228, 2.3079758145828584), (3.0524939561703404, 2.2846285794675696), (3.0816780000644526, 2.267118153131103), (3.1108620439585644, 2.2437709180158136), (3.1283724702950315, 2.2379341092369915), (NaN, NaN), (3.058330764949163, 2.5239377393992815), (3.0291467210550507, 2.5181009306204594), (3.0116362947185835, 2.5064273130628147), (2.988289059603294, 2.49475369550517), (2.9532682069303595, 2.465569651611059), (2.9357577805938924, 2.448059225274592), (2.90657373669978, 2.4305487989381254), (2.8832265015844905, 2.4130383726016587), (2.8657160752480233, 2.4072015638228366), (2.8423688401327336, 2.3780175199287252), (2.8248584137962665, 2.3605070935922585), (2.8073479874597993, 2.3546702848134364), (2.789837561123332, 2.3313230496981476), (2.7664903260080425, 2.3079758145828584), (2.7373062821139307, 2.2787917706887475), (2.719795855777463, 2.2554445355734583), (2.702285429440996, 2.2379341092369915), (2.6847750031045288, 2.220423682900525), (2.6672645767680616, 2.20875006534288), (2.655590959210417, 2.1912396390064135), (2.6322437240951273, 2.173729212669947), (2.6088964889798376, 2.150381977554658), (2.5913860626433705, 2.1387083599970134), (NaN, NaN), (2.124441360337578, 2.786594134446282), (2.1477885954528677, 2.7690837081098154), (2.1594622130105123, 2.7457364729945266), (2.1886462569046246, 2.7223892378792374), (2.223667109577559, 2.6932051939851265), (2.2645247710293157, 2.6698579588698372), (2.29954562370225, 2.634837106196904), (2.3462400939328294, 2.5939794447451483), (2.3870977553845862, 2.558958592072215), (2.416281799278698, 2.5181009306204594), (2.4804866958457445, 2.4714064603898813), (2.5213443572975014, 2.436385607716948), (2.5622020187492582, 2.4013647550440145), (2.5913860626433705, 2.3605070935922585), (2.6205701065374822, 2.3313230496981476), (2.6497541504315945, 2.3021390058040363), (2.673101385546884, 2.272954961909925), (2.696448620662174, 2.249607726794636), (2.713959046998641, 2.2379341092369915), (2.713959046998641, 2.197076447785236), (2.713959046998641, 2.173729212669947), (2.702285429440996, 2.127034742439369), (2.702285429440996, 2.097850698545258), (2.702285429440996, 2.0628298458723244), (2.702285429440996, 2.033645801978213), (2.7081222382198185, 2.0044617580841018), (2.713959046998641, 1.981114522968813), (2.7256326645562856, 1.957767287853524), (2.7431430908927528, 1.9402568615170572), (2.76065351722922, 1.9227464351805905), (2.7781639435656875, 1.9110728176229461), (2.7840007523445096, 1.8935623912864794), (2.8015111786809768, 1.8760519649500127), (NaN, NaN), (2.8015111786809768, 2.7690837081098154), (2.789837561123332, 2.7398996642157045), (2.76065351722922, 2.6932051939851265), (2.731469473335108, 2.6406739149757263), (2.6906118118833513, 2.564795400851037), (2.6205701065374822, 2.4538960340534146), (2.5505284011916136, 2.325486240919325), (2.4629762695092774, 2.1854028302275914), (2.369587329048119, 2.0102985668629243), (2.29954562370225, 1.881888773728835), (2.211993492019914, 1.7534789805947455), (2.165299021789335, 1.689274084027701), (2.1361149778952226, 1.6425796137971231), (2.106930934001111, 1.6133955699030118), (2.0894205076646433, 1.595885143566545), (2.071910081328176, 1.6192323786818341), (2.054399654991709, 1.6425796137971231), (2.0485628462128864, 1.6600900401335899), (2.036889228655242, 1.6951108928065233), (2.036889228655242, 1.718458127921812), (2.036889228655242, 1.741805363037101), (2.0427260374340643, 1.7709894069312124), (2.071910081328176, 1.7943366420465012), (2.1010941252222883, 1.8176838771617903), (2.1186045515587555, 1.8410311122770793), (2.1302781691164, 1.858541538613546), (2.1302781691164, 1.881888773728835), true], 1, (-0.23362938630667396, 1.4266176889807005), (3.636174834052581, 4.222449094036554), (0, 479), (663, 0)) → stroke2

AI Drawing Prompt Reference

Create an interactive visualization showing the decimal subtraction 2.1 - 0.4. Include input boxes for users to enter values, graphical elements representing the ones and tenths places, and dynamic lines to illustrate the subtraction process and result. Start by drawing the graphical elements for the integer and decimal parts, then connect them with lines, and finally add input boxes and prompt text to complete the visualization of the subtraction process.
The prompt above was compiled from the original drawing commands and is for reference only.