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Solving Two-Step Inequalities

Solving Two-Step Inequalities
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2019-01-14 21:10
Coordinate GeometryInequalityGeometric Construction
In collections Inequality-One Variable
This example demonstrates how to dynamically solve two-step inequalities using GeoGebra. It covers core math concepts like inequality solving and real number arithmetic. The construction leverages commands and objects such as questionList, questionListIndex, numQuestions, ConfirmStep, TryAnother, xmark, cmark, and various G1-GX1 variables alongside button and text elements for interactive learning. Ideal for middle school and above, focusing on mastering inequality solving techniques.

GeoGebra Commands & Parameters

  1. UnicodeToLetter(10007) → xmark
  2. UnicodeToLetter(10003) → cmark
  3. LaTeX("\text{Choice 1}") → G1
  4. LaTeX("\text{Choice 2}") → H1
  5. LaTeX("\text{Choice 3}") → I1
  6. LaTeX("\text{Choice 4}") → J1
  7. LaTeX("\text{Choice 5}") → K1
  8. LaTeX("\text{Choice 6}") → L1
  9. LaTeX("\text{1st Step Choice 1}") → M1
  10. LaTeX("\text{1st Step Choice 2}") → N1
  11. LaTeX("\text{1st Step Choice 3}") → O1
  12. LaTeX("\text{1st Step Choice 4}") → P1
  13. LaTeX("\text{1st Step Choice 5}") → Q1
  14. LaTeX("\text{1st Step Choice 6}") → R1
  15. LaTeX("\text{2nd Step Choice 1}") → S1
  16. LaTeX("\text{2nd Step Choice 2}") → T1
  17. LaTeX("\text{2nd Step Choice 3}") → U1
  18. LaTeX("\text{2nd Step Choice 4}") → V1
  19. LaTeX("\text{2nd Step Choice 5}") → W1
  20. LaTeX("\text{2nd Step Choice 6}") → X1
  21. Element(questionList, questionListIndex) → questionNumber
  22. Element(Y2:Y4, questionNumber) → step1CorrectOption
  23. Element(Z2:Z4, questionNumber) → step2CorrectOption
  24. LaTeX("\text{Correct First Step}") → Y1
  25. LaTeX("\text{Inequality}") → A1
  26. LaTeX("Operand1") → B1
  27. LaTeX("Operand2") → C1
  28. LaTeX("\text{Correct Second Step}") → Z1
  29. LaTeX("Operand3") → D1
  30. LaTeX("Sign") → E1
  31. LaTeX("Sign Reversed") → F1
  32. Element(M2:M4, questionNumber) → step1option1
  33. Element(N2:N4, questionNumber) → step1option2
  34. Element(O2:O4, questionNumber) → step1option3
  35. Element(P2:P4, questionNumber) → step1option4
  36. Element(Q2:Q4, questionNumber) → step1option5
  37. Element(R2:R4, questionNumber) → step1option6
  38. Element(S2:S4, questionNumber) → step2option1
  39. Element(T2:T4, questionNumber) → step2option2
  40. Element(U2:U4, questionNumber) → step2option3
  41. Element(V2:V4, questionNumber) → step2option4
  42. Element(W2:W4, questionNumber) → step2option5
  43. Element(X2:X4, questionNumber) → step2option6
  44. LaTeX("\text{\textbf{Question: }What steps would you take to solve this inequality?\\\textbf{Instructions: }Select the correct first step to solve the given inequality. When\\you are happy with your selection, confirm your step and then select step two.}") → TEXT