What |
Type |
Description |
When |

Recursion |
*New* |
This activity graphs recursive functions of the form f(0)=C and defining f(n)
based on f(n-1). |
August 2005 |

All Activities |
*Change* |
Interactivate's Java activities now use .jar files so the user only loads a single file
as opposed two or more class files for each activity. This change was necessitated because of
Sun's newest versio of Java (1.5) which caused the applets not to load due to a caching
problem with the class files. Note however that a JavaScript embedded in each activity's
index page detects the user's browser and will load the class files for our Mac OS9 users. Mac OS9
does not support the use of .jar files. |
August 2005 |

General Coordinates Game, Simple Coordinates Game |
*Change* |
A more "behind the scenes" change to consolidate the code of these activities so they all
share the same code base giving them a familiar look and feel. |
August 2005 |

Maze Game, Simple Maze Game |
*Change* |
A more "behind the scenes" change to consolidate the code of these activities so they all
share the same code base giving them a familiar look and feel. |
August 2005 |

Vertical Line Test |
*Change* |
Changed the interface slightly to make it more intuitive. Also incorporated the
ShodorGraphPaper class to consolidate code and give a similar look and feel to other activities
on a coordinate plane. |
August 2005 |

Transmographer |
*Change* |
Changed the interface slightly to give coordinates of each vertex on the polygon, make the
line of reflection easier to read, allow the user to rotate around a point, show original
polygon, and show a trace. Also, the activity now uses the ShodorGraphPaper class to have a
similar look and feel to the other activities on a coordinate plane. |
August 2005 |

Pattern Generator |
*Change* |
Added an option to allow the user to choose "easy" "medium" or "hard" patterns. |
August 2005 |

Arithmetic Quiz, Algebra Quiz, Estimator Quiz, Fraction Quiz |
*New* |
Similar to the *Four* games (Arithmetic
Four, Algebra Four, Estimator Four, Fraction Four) the *Quizzes* quiz the user on specific
types of computations: computing number sentences, solving algebraic equations, estimating
number sentences, computing number sentences with fractions, decimals, percents. These
activities do not have the "Connect Four" game interface, however. |
August 2005 |

Conic Flyer |
*Change* |
Added the general equations that correspond to the numeric equations so the user can
readily see which parameter is being manipulated. |
August 2005 |

Arithmetic Four, Algebra Four, Estimator Four, Fraction Four |
*Change* |
A more "behind the scenes" change to consolidate the code of these activities so they all
share the same code base giving them a familiar look and feel. Also removed the default
check boxes on the opening screen to make the interface more intuitive. |
August 2005 |

Graphit, Sketcher, Simple Plot, Scatter Plot |
*Change* |
A more "behind the scenes" change to consolidate the code of these activities so they all
share the same code base giving them a familiar look and feel. |
August 2005 |

Multi Bar Graph |
*New* |
A new activity, similar to *Bar
Graph* but uses two bars per category instead of one. |
August 2005 |

Scatter Plot |
*New* |
*Scatter Plot* is similar to the *Simple
Plot* activity but allows the user to name the axes making it more appropriate to graph
named data rather than just X-Y pairs. |
August 2005 |

North Carolina Standard Course of Study Alignment |
*New* |
Interactivate lessons are now aligned with the North Carolina Standard Course of Study for
grades 6, 7, and 8. |
August 2005 |

Flash Stopwatch, Flash Sierpinski's Triangle, Flash Fire!!, Flash Coloring Remainders in Pascal's Triangle,
Venn Diagrams |
*New* |
Several activities have been converted to Macromedia's Flash in addition to their Java
versions. This provides users another option for using our activities if Java is problematic on
their computers. |
August 2005 |

Function Flyer, Data
Flyer |
*Change*
| New functionality has been added to these graphing applets that allow the user to pan
and zoom around the coordinate plane. For applets that graph functions, a "Show Tabular
Data" button has been added to view the function in table format. Also, under the
*Slider Limits* window, the color of the slider appears next to the input boxes
that control that slider. |
August 2005 |

Graphics |
*Change* |
Graphics have changed again to incorporate a better color scheme. |
August 2005 |

Home Page, Teacher Page, Student
Page, Footer Image, *What? How? Why?* Buttons |
*Change* |
Graphics for these pages have been redesigned to incorporate a new look and feel for *Project
Interactivate*. |
July 2004 |

Graphing Activities |
*Change* |
All graphing activities which use an x-y coordinate plane now have a common "Graph Paper" for familiarity and
a common look and feel. |
July 2004 |

Graph Sketcher and Graphit |
*Change* |
These activities now accept the notation ln(x) for the natural log function. |
July 2004 |

Venn Diagrams Shape Sorter |
*Change* |
Removed the "Set Rule" button on the "Make the Rule" setting in order to get rid of the confusing error
messages that occurred if the user selected two sets that didn't work for the type of Venn Diagram selected.
The applet now automatically propagates the 2nd "Choose the Rule" drop down menu with only appropriate choices
based on what the user chose for the 1st "Choose the Rule" drop down menu. Also changed font sizes to make
more user friendly for younger users. |
July 2004 |

Angles |
*Change* |
Added information about the diagram. The applet now gives the angle measure of one of the angles and
also states which lines are parallel. |
July 2004 |

TransmoGrapher2 |
*Change* |
Changed the interface of this activity to allow for easier input of the coordinates used as the
vertices of the polygon. |
July 2004 |

Clock Activity |
*Change* |
Added functionality to allow the user to set a desired start time and a window which displays the addends as you
move the clock hands forward. |
July 2004 |

Coloring Multiples in Pascal's Triangle, Coloring Remainders in Pascal's Triangle |
*Change* |
Added "Set" buttons for the user to click after entering a
divisor in addition to the
previous functionality of hitting the return key on the keyboard to get the input to
take. |
July 2004 |

Perimeter Explorer, Shape
Explorer, Area Explorer |
*Change* |
Funtionality added to allow an option to draw rectangular shapes only and a display window
that, when opened, will display previous correct answers allowing side by side comparison of an
area with its matching perimeter. |
July 2004 |

Arithmetic Four, Estimator Four, Fraction Four |
*Change* |
Minor functionality change so now that when the first player gets the answer incorrect, the
second player has a chance to answer that question. |
July 2004 |

Safari Compliance |
Change |
Made changes to many of the activities so they will now work on Mac OSX 10.1.x and 10.2.x running the Safari
browser. We are still working on Macs running OSX 10.3.x (Panther). |
July 2004 |

Comparison Estimator |
*Change*
| Minor functionality change to remove the "almost the same as" answer option and the
tolerance selection as these controls created some ambiguity on what
answers would be counted
as correct. |
July 2004 |

Fraction Sorter |
*Change* |
Minor functionality changes to this activity include adding a **Keep Score** button, a
window that tells the users what fraction they did create if the fraction is incorrect, and
prevention of having multiple error windows open at the same time. |
July 2004 |

Pattern Generator |
*Change*
| New patterns have been added to the activity. |
July 2004 |

Record Sheets |
*New* |
Black line masters added to General Coordinates Game, Simple Coordinates Game, Maze Game, Simple Maze
Game, Slope Slider, Function Flyer, Data Flyer, Conic Flyer, All Fraction Finders and Fraction Pointers,
Graphit!, Graph Sketcher, Simple Plot, Fire!!, Directable Fire!!, A Better Fire!!, Clock Wise, Elapsed Time,
Area Explorer, Shape Explorer, Perimeter Explorer, Triangle Explorer, All Function Machines and Number
Crunchers. These are accessible through each activity's "What?" and
"Why?" pages. |
April 2004 |

Data Flyer |
*Change* |
Improved functionality to allow for input in scientific notation. Also improved to allow for
greater accuracy from 10^{8} to 10^{-8}. |
February 2004 |

Slope Slider |
*Change* |
Fixed sliders so they now increment in predictable, equal size increments. |
February 2004 |

Data Flyer, Function Flyer,
SlopeSlider, Simple Plot |
*Change* |
These activities now share the same code for the coordinate plane, graphing of functions,
sliders, and data parsers. |
February 2004 |

Equivalent Fractions Pointer, Equivalent Fractions Finder |
*New* |
Two new similar activities that allow students to visually represent equivalent fractions by
dividing squares or circles and shading portions equivalent to a given fraction. Also shows the fractional
value on a number line. |
February 2004 |

Elapsed Time |
*New* |
New activity that helps students learn how to determine the time between a beginning time and an
ending time. |
February 2004 |

Fire!! |
*Change* |
Added a feature that highlights the center tree or the center rows, as well as
another feature that numbers each row and column in the forest. |
February 2004 |

More applets updated to Java 1.1 |
*Change* |
Applets updated include: Venn Diagrams, Coloring Multiples in Pascal's Triangle, Coloring Remainders in Pascal's
Triangle, Angles, Fire!!, and A Better Fire!!. |
February 2004 |

Clock Wise
| *Change* |
An improved version that has a larger clock face, larger font, and larger input boxes to make it more
appropriate for younger children. |
February 2004 |

Fire! Probability and Chaos Lesson |
*New* |
Utilizes and reinforces concepts of probability, mean, line plots, experimental data, and chaos in analyzing a
forest fire simulation. |
February 2004 |

An improved *Score Board* has been implemented into many of the applets with this feature. |
*Change* |
Fraction Pointer, Bounded Fraction Pointer, Fraction
Finder, Bounded Fraction Finder, Coloring Multiples in Pascal's Triangle, Coloring Remainders in Pascal's Triangle, Venn Diagrams, Clock Wise, Factorize, Factorize 2 |
February 2004 |