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1-Step Equations and Rounding for Mobile Devices

1-Step Equations and Rounding for Mobile Devices
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2012-10-03 22:47
VectorSequenceGeometric Construction
In collections EXPRESSIONS & EQUATIONS
This example demonstrates an interactive mobile-optimized teaching applet for solving one-step linear equations and applying rounding rules. Core mathematics concepts include Grade 5 number and operations in base ten (CCSS 5.NBT.4), place value understanding, one-step equation solving, and rounding to specified decimal places. Construction highlights: GeoGebra commands Random, Segment, Sequence, Vector, If, Min, Max, and Textfield are used, together with objects such as b, a, roundPlaces, answer, ans, z_1, z_2, w, listw, c, d, listd, e, u, listA, A, text1, text4, text5, textA, xmin, xmax, show, inputBox2, and text2. Suitable for upper elementary (Grade 5) mathematics instruction, mobile self-paced practice, and remote learning environments, helping students build fluency in equation solving and approximation.

GeoGebra Commands & Parameters

  1. Random(2, 9) → a
  2. Segment((0, 0), (0, 2)) → z_1
  3. Segment((b, 0), (b, 2)) → z_2
  4. Segment((0, 0.6), (b, 0.6)) → w
  5. Sequence(Segment[(j * b, 0.6 - 0.3), (j * b, 0.6 + 0.3)], j, 0, 1) → listw
  6. Segment((0, 2), (b, 2)) → d
  7. Sequence(Segment[(j * b / a, 2 - 0.3), (j * b / a, 2 + 0.3)], j, 0, a) → listd
  8. Vector((0, 1.3), (answer, 1.3)) → u
  9. Sequence(Segment[(j * answer, 0), (j * answer, 1.3 + 0.3)], j, 0, 1) → listA
  10. If(ans ≟ answer, "Yes!", If[ans ≟ -answer, "Check your sign", "No..."]) → textA
  11. Min(-2, b - 2) → xmin
  12. Max(2, b + 2) → xmax
  13. Textfield(ans) → inputBox2

AI Drawing Prompt Reference

Draw a number line from -2 to b+2. Draw a line segment from the origin to point a. Draw a vertical line segment at point b. Draw a horizontal line segment at 0.6, then draw 5 equally spaced vertical line segments between 0 and b. Draw a horizontal line segment at 2, then draw 5 equally spaced vertical line segments between 0 and a/b. Draw a vector from the answer point to 1.3, then draw 5 equally spaced vertical line segments between 0 and 1. Display 'Correct', 'Check your sign', or 'Incorrect' based on the answer.
The prompt above was compiled from the original drawing commands and is for reference only.