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Directed Number Subtraction Practice

Directed Number Subtraction Practice
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2020-03-02 10:36
FunctionSequenceCoordinate GeometryComplex NumberSlider Animation
This example demonstrates the calculation process of directed number subtraction, involving core mathematical concepts such as directed number operations, number line representation, and sign rules. It constructs points, sequences, conditional statements, and corner points using GeoGebra commands, and employs sliders and buttons for interactive practice. Suitable for middle school and above mathematics education, helping students understand and master the subtraction of directed numbers.

GeoGebra Commands & Parameters

  1. Point(xAxis) → B
  2. Sequence(Semicircle[(((k - 1 + x(A)) * dis), 0.1), (((k + x(A)) * dis), 0.1)], k, 1, Div[x(B) - x(A), dis]) → l1
  3. Sequence(Semicircle[(((x(A) - k) * dis), 0.1), (((x(A) + 1 - k) * dis), 0.1)], k, 1, Div[x(A) - x(B), dis]) → l3
  4. If(x(B) - x(A) > 0, "+", "") → sign2
  5. If(x(B) - x(A) < 0, "+", "") → sign3
  6. If(x(A) > 0, "+", "") → signa
  7. If(x(B) - x(A) > 0, "+", "") → signba
  8. If(x(B) > x(A), "+", "-") → op2
  9. If(x(B) > 0, "+", "") → signb
  10. Sequence(Vector[(((k + x(A) - 0.05) * dis), 0.3), (((k + x(A)) * dis), 0.1)], k, 1, Div[x(B) - x(A), dis]) → l2
  11. Sequence(Vector[(((x(A) - k + 0.05) * dis), 0.3), (((x(A) - k) * dis), 0.1)], k, 1, Div[x(A) - x(B), dis]) → l4
  12. Corner(1) → C
  13. If(num0 > 0, "+", "") → sign0
  14. If(num1 > 0, "+", "") → sign1

AI Drawing Prompt Reference

Draw a horizontal number line in a coordinate system, mark two points for the initial and target positions, use multiple arcs and vector segments to show the movement from the initial to the target position, including both forward and backward movements, with different symbols indicating the direction of movement and the sign of the result, also display sliders and buttons for interactive practice, presenting the calculation process of directed number subtraction.
The prompt above was compiled from the original drawing commands and is for reference only.