Click the links below to see GeoGebra (mostly) at work:

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1. Perpendicular Lines (Classwork)

       Use sliders to change slope and y-intercept of two lines and observe what happens when they are

       perpendicular or parallel to each other.

2. System_of_Linear_Equations (Classwork)

       Solve the equations and check your solution with the answer given by the program. You can change

       the equations and solve them for practice.

3. Change_of_Base_in_Logarithm

       Use it as a calculator for changing the base of a logarithm and finding the answer.

4. Snowman_Equations (Classwork)

       Construct a snowman like the silhouetted image at the background using points, equations of circle,

       and line segment in the Input Bar. Once satisfied, decorate it to claim it as your creation.

5. Stopwatch (Classwork)

       Construct a stopwatch like the one here. Once satisfied, decorate it to claim it as your creation.

6. Angles_in_Triangle (Classwork)

       Change the angles and verify the fact about internal angles of any triangle, that is, right, obtuse, acute,

       scalene, equiangular, equilateral, etc.

7. UpperSum&LowerSum

        As the number of panels increases the accuracy gets better. The arithmetic average of upper sum

        and lower sum approaches the analytical solution.

8. Degree_Radian_Arc

        Use it as a calculator to convert from radian to degrees and vice versa.

9. Trignometric_Functions (Classwork)

        Using a unit circle, trigonometric functions, such as sine, cosine, tangent, cotangent, secant, and

        cosecant can be visualized as lengths instead of ratios as the denominator becomes the radius of the

        unit circle.

10. Subtracting_Signed_Numbers (Classwork)

        It is fun to watch the subtraction of signed numbers as the result is shown visually as length against a

        ruler.

11. Addition&Subtraction of Integers (Classwork)

        It is fun to watch the subtraction of integers as the result is shown visually as length against a ruler.

12. MaxAreaGraph

        A rectangular area with three sides is to be fenced by barbed wire along the bank of a river. Can you

        fence the maximum area if barbed wire of known length is given to you? Visualize it in a graph.

13. MaxVolGraph

       You are to construct an open container from a square sheet metal by cutting out four squares from its

       four corners and bending the sides so that the container has the maximum volume. Visualize it in a

       graph.

14. MaxVolume-2D

       You are to construct an open container from a square sheet metal by cutting out four squares from its

       four corners and bending the sides so that the container has the maximum volume. Visualize the design

       in 2-D.

15. MaxVolume-3D

       You are to construct an open container from a square sheet metal by cutting out four squares from its

       four corners and bending the sides so that the container has the maximum volume. Visualize the design

       in 3-D.

16. MaxVol-3D&Graph

       You are to construct an open container from a square sheet metal by cutting out four squares from its

       four corners and bending the sides so that the container has the maximum volume. Visualize both the

       design and the graph linked in 3-D.

17.  Derivative_of_a_Function 

       Have you visually observed the definition of derivative of a function? Here you'll see how the limit

       approaches the analytical or exact value as the distance between the two points on the function gets

       infinitesimal.

18. Function & its Derivative (Classwork)

    Type in a function and find its derivative. Also see the graphs of both the function and its derivative

       as well as the maximum or the minimum, if exists, of the original function.

19. Animation

       Observe the movement of planets in our solar system. The orbits and speeds are not precise,

       nevertheless, it is good to watch the animation.

20. Incident&Reflected_Angles

       A simple demonstration of incident and reflected angles using the rays from a flashlight.

21. Movable_Protractor

       Move this protractor to measure any angle anywhere and make it smaller or larger depending on your

       need.

22. Movable_3D-Prism

       See how GeoGebra handles 3-D with its 2-D resources!!

23. GeoGebra_in_3D

       A 3-D activity using tools and commands for 2-D!!

24. LineGraphs&More

       Find a wealth of GeoGebra resources through this link.

25. DiceThrowProblem (Not with GeoGebra)

       Though not a GeoGebra project, I added this for its animation part.

26. BoxPlot (Demonstration by Linda Fahlberg)

       Watch Professor Linda Fahlberg explaining Box and Whisker Plot.

27. NormalDistribution

       Go through Interactive Statistics Manipulative with John Burke.

28. MathConstructions

       Visit some high-end math examples.

29. BoxPlot (Classwork)

       Calculate some statistical parameters related to Box Plot and compare them with the ones calculated

       by GeoGebra. Change the table data and see immediate dynamic effect on the rest of the parameters.

30. Box&WhiskerPlot (Classwork)

       Draw Box and Whisker diagram from a given set of data. Label the diagram. Calculate the statistical

       parameters. Then change Scores between the limit 0 to 100 and see how it affects the diagram and

       the parameters.

31. Box&WhiskerPlot (Example)

       Observe how the change of Score values affects the labels Q1, Q2, Min, Max, Median, etc.

32. Histogram (Classwork)

       Can you detect the mean, median and mode on the histogram?

33. LineOfBestFit (Classwork)

       Edit data in the table, add or delete data and watch the dynamic effect on the line of best fit and its

       correlation coefficient with respect to scattered data points.

34. Sketch&Graph

      Move the red dot on the surface of the cylinder from the extreme right edge of the cone base to its

      center and observe how the volume of the cylinder changes with its radius.

35. Unexpected_Discoveries

       Can you guess what happens to surface area of the cylinder inside the cone when its radius goes from

       zero to the cone's radius? Slowly move the red dot from cone's center to its extreme right edge and

       observe the graph on its right.

36. Addition of Fractions (Classwork)

        It does addition of fractions. Both the numerator and denominator can be varied from 1 to 25.

        The final answer is given in its reduced/simplified form.

37. Subtraction of Fractions (Classwork)

         It does subtraction of fractions. Both the numerator and denominator can be varied from 1 to 25.

         The final answer is given in its reduced/simplified form.

38. Multiplication of Fractions (Classwork)

        It does multiplication of fractions. Both the numerator and denominator can be varied from 1 to 25.

         The final answer is given in its reduced/simplified form.

39. Division of Fractions (Classwork)

     It does division of fractions. Both the numerator and denominator can be varied from 1 to 25.

        The extra step of inverting the second input fraction in its improper form while the division is changed

        to multiplication is shown. The final answer is given in its reduced/simplified form.

40. Math&RealWorld

        Real world visuals to explain the theory of imagery.

41. PythagoreanLadder (Classwork)

        A fun way to learn the application of Pythagorean theorem.

42. Circle (Calculation of pi) (Classwork)

        Note circumference and diameter of the circle on the worksheet. Then calculate their ratio, that is,

        divide the circumference by diameter and write the result on the proper column of the worksheet.

        Now, drag Point A to enlarge or reduce the size of the circle. Then repeat the earlier procedure to

        fill out the entire worksheet.

43. RectangularPrism (Classwork)

       Use this worksheet to practice finding the Volume and Surface Area of a Rectangular Prism. Adjust

       the height, length, and width using the labeled sliders.

44. TriangularPrism (Classwork)

       Use this worksheet to practice finding the Volume and Surface Area of a Triangular Prism. Adjust

       the height, length, and width using the labeled sliders.

45. Cone (Classwork)

       Use this worksheet to practice finding the Volume and Surface area of a Circular Cone. Adjust

       the height and radius using the labeled sliders.

46. Cylinder (Classwork)

        Use this worksheet to practice finding the Volume and Surface area of a Circular Cylinder. Adjust

        the height and radius using the labeled sliders.

47. RectangularPyramid (Classwork)

        Use this worksheet to practice finding the Volume and Surface area of a Rectangular Pyramid.

        Adjust the height, length, and width using the labeled sliders.

48. TriangularPyramid (Classwork)

        Use this worksheet to practice finding the Volume of a Triangular Pyramid. Adjust the height,

        length, and width using the labeled sliders.

49. Sphere (Classwork)

        Use this worksheet to practice finding the Volume and Surface Area of a Sphere. Adjust the radius

        using the labeled slider.

50  QuadraticEquation (Classwork)

        Use this worksheet to solve quadratic equations having real roots

51. RandomPointGenerator (Classwork)

        This generates a random point that can be plotted on the axes by the user and check if it is correct.

52. LinearRegression (Classwork)

       This allows plotting points and finding the Line of Best Fit (Regression Function).

53. Arithmetic&GeometricSequences (Classwork):

      Check your understanding of arithmetic and geometric sequences.

54. Sequences&Series (Classwork):

       This allows viewing both arithmetic and geometric sequences graphically for better understanding of

       their individual behavior.

55. Simple&CompoundInterests (Classwork):

      This demonstrates the procedures to calculate both simple and compound interests on a principal

      amount when the time and interest rates are given.

56. Laws of Exponents (Classwork):

      Explore the Laws of Exponents as a paleontologist in the study of dinosaurs.

57. SimplifyingExpressions (Classwork):

      Simplify algebraic expressions/equations using associative, commutative, and distributive properties.

58. UnitConversion (Classwork):

      Use this visual aid to practice converting units in different dimensional categories such as length (L):

      [area (L^2), volume (L^3)], time (T), and mass (M) within the same unit system or from one system of

      unit to another.

59. Algebra_BalanceScales: (Classwork):

      Solve linear algebraic equations by using a balance beam.

60. NewTools (Classwork):

       Use the tools at the end of the Tool Bar to draw Line Segment, Parallelogram, Square, Trapezoid, and

       the Altitude - the measured distance from a point to a straight line or a segment. Use this tool to

       calculate areas of various shapes.