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Building Houses with Side View...	Perspective (3-D in 2-D) (Math 6)+	Java Applet	Tool		[20]
This provides a visualization challenge. Front, right, and top views, and the number of blocks used, are shown; user constructs a block figure (dynamic, perspective drawing) to match (10 different fi... More: lessons, discussions, ratings, reviews,...
Cutouts, Nets	Polyhedra (Math 6)+	Java Applet	Tool		[17]
Dynamic net for constructing Platonic solids. Slider adjusts from flat to solid; it is interesting to see the shapes materialize from the flat nets. More: lessons, discussions, ratings, reviews,...
Geoboard	Measurement (Math 5)+	Java Applet	Tool		[14]
Investigate, describe, and reason about the results of subdividing, combining, and transforming shapes using models and representations. Develop, understand, and use formulas to find the perimeter an... More: lessons, discussions, ratings, reviews,...
Algebra Balance Scales - Negat...	Algebra and expressions (Math 7)+	Java Applet	Tool		[8]
Solve simple linear equations using a balance beam representation. Coefficients and constants may be positive or negative. More: lessons, discussions, ratings, reviews,...
Building Houses	Perspective (3-D in 2-D) (Math 6)+	Java Applet	Tool		[8]
Provides a "building pad" for constructing block houses. Building pad is dynamic; top, front, and side views of constructed objects are shown. More: lessons, discussions, ratings, reviews,...
Balloon Booths	Fractions (Math 4)+	Java Applet	Technology PoW		[7]
Scale the size of a hot air balloon so you can make it fit through a narrow passage and hit a nail to pop it. Students are invited to use the link "Submit your answer" to share their solu... More: lessons, discussions, ratings, reviews,...
Algebraic Reasoning	Multiplication (Math 4)+	Flash	Tool		[7]
This program introduces students to fundamental concepts in algebra. Using two or three weighing scales, students must determine the weight of a specific object or group of objects. The program provid... More: lessons, discussions, ratings, reviews,...
Grapher	Equations and functions (Math 4)+	Java Applet	Tool		[5]
Using this virtual manipulative you may: graph a function; trace a point along the graph; dynamically vary function parameters; change the range of values displayed in the graph; graph multiple functi... More: lessons, discussions, ratings, reviews,...
Runners	Rates (Math 5)+	Java Applet	Technology PoW		[5]
Tell how a runner's step size predicts the time it takes to run from the building to the tree. A link to a Java applet from NCTM's Electronic Examples, Principles and Standards for School Mathe... More: lessons, discussions, ratings, reviews,...
Time - Match Clocks	Time (Kindergarten)+	Java Applet	Tool		[5]
Users set the time on a digital clock to match the time displayed on an analog clock or vice versa. More: lessons, discussions, ratings, reviews,...
Base Blocks Addition	Addition (Kindergarten)+	Java Applet	Tool		[4]
Use base ten blocks to model grouping in addition. More: lessons, discussions, ratings, reviews,...
Math Doodles: Sums Stacker	Addition (Math 1)+	Flash	Tool		[4]
Click and drag values from stack to stack until the sums of each stack equals the given targets. More: lessons, discussions, ratings, reviews,...
Number Line Bounce	Addition (Math 3)+	Java Applet	Tool		[4]
This virtual manipulative can be used to visualize a sequence of operations on a number line and to create number sentences representing the operations. More: lessons, discussions, ratings, reviews,...
Types of Triangles	Classify geometric objects (Math 3)+	Java Applet	Tool		[4]
This JavaSketchpad applet accompanies the tPoW, Types of Triangles. Students are able to drag and manipulate four triangles and by noticing what happens they classify the triangles as either scalene, ... More: lessons, discussions, ratings, reviews,...
Bobbie Bear: Counting Strategi...	Counting (Pre-Kindergarten)+	Java Applet	Tool		[4]
The user can investigate how many different outfits can be made using different colored shirts and pants. More: lessons, discussions, ratings, reviews,...
Fractions - Naming	Fractions (Kindergarten)+	Java Applet	Tool		[4]
Write the fraction corresponding to the highlighted portion of a shape. More: lessons, discussions, ratings, reviews,...
Least Squares Circle	Least-Squares Regression (Probability & Statistics)+	Java Applet	Tool		[4]
This applet produces a least squares fit of an equation of a circle to a set of data points which you generate by clicking the mouse at selected points in the drawing canvas. More: lessons, discussions, ratings, reviews,...
Poly	Polyhedra (Math 5)+	Computer	Tool		[4]
Poly is a shareware program for exploring and constructing polyhedra. With Poly, you can manipulate polyhedral solids on the computer in a variety of ways. Flattened versions (nets) of polyhedra may b... More: lessons, discussions, ratings, reviews,...
Tomography Game	Polyhedra (Math 5)+	Java Applet	Tool		[4]
This game challenges you to identify a three-dimensional object based only on its intersections with a plane. The height of this plane can be changed using a slider control. This simulation of a compu... More: lessons, discussions, ratings, reviews,...
Dimenxian	Rect coordinate geometry (Math 6)+	Computer	Tool	$	[4]
Students experience, explore, and apply math concepts in an engaging three-dimensional virtual world. The topics covered in Dimenxian include: coordinate system and scatter p... More: lessons, discussions, ratings, reviews,...
Base Blocks Subtraction	Subtraction (Kindergarten)+	Java Applet	Tool		[4]
Base blocks consist of individual units, longs (containing 10 units), flats (containing 10 longs), and blocks (containing 10 flats) and can be used to show place value for numbers and to increase unde... More: lessons, discussions, ratings, reviews,...
Cubes	Volume (Math 5)+	Java Applet	Tool		[4]
The volume of a box can be determined by using this applet to manipulate and enumerate unit cubes, rows of unit cubes, or layers of unit cubes. More: lessons, discussions, ratings, reviews,...
Five Frame	Addition (Kindergarten)+	Java Applet	Tool		[3]
In this interactive five-frames tool, users practice counting and adding to ten. The frames help users think of numbers in relation to 5. More: lessons, discussions, ratings, reviews,...
Zoom Algebra	Algebra and expressions (Math 7)+	TI-83/TI-84	Tool	$	[3]
Zoom Algebra is a Computer Algebra System App for TI-83 Plus and TI-84 Plus graphing calculators. Its patent-pending interface is visual and easy to use, with many little shortcuts. For example, ... More: lessons, discussions, ratings, reviews,...
Fill and Pour	Capacity/volume (Math 4)+	Java Applet	Tool		[3]
Fill a glass with the requested amount of liquid by filling, emptying, and pouring between it and a second container. Click the "New Problem" button to generate new parameters; "Challenge" creates con... More: lessons, discussions, ratings, reviews,...
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