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Base 10 Blocks	Operations with numbers (Math 4)+	Java Applet	Tool	[0]
This program consists of a panel, as shown on the right, where one can click on any of three different block sizes that represent 1 unit, 10 units, and 100 units and drag them into the working pane... More: lessons, discussions, ratings, reviews,...
Base Blocks	Addition (Math 4)+	Java Applet	Tool	[9]
Illustrate addition and subtraction in a variety of bases. More: lessons, discussions, ratings, reviews,...
Base Blocks Addition	Addition (Math 4)	Java Applet	Tool	[4]
Use base ten blocks to model grouping in addition. More: lessons, discussions, ratings, reviews,...
Base Blocks Decimals	Place value (Math 4)+	Java Applet	Tool	[2]
Add and subtract decimal values using base blocks. More: lessons, discussions, ratings, reviews,...
Base Blocks Subtraction	Subtraction (Math 4)	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,...
Block Perimeter Applet	Perimeter (Math 4)+	Java Applet	Tool	[3]
This tool allows the user to add square boxes to the "table" adding one unit to the area of the larger box. The tool will also calculate the perimeter for the user upon pressing the "show perimeter... More: lessons, discussions, ratings, reviews,...
Bounded Fraction Finder	Comparing and ordering (Math 4)	Java Applet	Tool	[0]
Graphically determine the value of 2 given fractions represented as points on a number line then graphically find a fraction whose value is inbetween the value of the 2 given fractions and determin... More: lessons, discussions, ratings, reviews,...
Bounded Fraction Pointer	Comparing and ordering (Math 4)	Java Applet	Tool	[1]
Graphically determine the value of 2 given fractions represented as points on a number line then graphically find a fraction whose value is inbetween the value of the 2 given fractions and determin... More: lessons, discussions, ratings, reviews,...
Box Model	Probability (Math 4)	Java Applet	Tool	[1]
Using this virtual manipulative you may: add data points to the draw box; simulate random draws from a box; compare actual draws with probability More: lessons, discussions, ratings, reviews,...
Buscador de fracciones	Comparing and ordering (Math 4)	Java Applet	Tool	[0]
Similar al "Indicador de fracciones" pero sin el cursor que le permite al usuario determinar el valor de un n�mero fraccionario entre los dos puntos extremos. versi�n en ingl�s More: lessons, discussions, ratings, reviews,...
Buscador de fracciones entre p...	Comparing and ordering (Math 4)	Java Applet	Tool	[0]
Similar al "Indicador de fracciones entre puntos extremos" pero sin el cursor que le permite al usuario determinar el valor de un n�mero fraccionario entre los dos puntos extremos. versi... More: lessons, discussions, ratings, reviews,...
Buscador de fracciones equival...	Equivalent fractions (Math 4)	Java Applet	Tool	[0]
Representa fracciones equivalentes por medio de la divisi�n de cuadrados o c�rculos y de sombrear las porciones equivalentes a una fracci�n dada. Muestra tambi�n el valor fraccionario en una recta ... More: lessons, discussions, ratings, reviews,...
Caesar Cipher	Operations with numbers (Math 4)+	Java Applet	Tool	[0]
Students practice simple arithmetic skills by encoding and decoding messages using an affine cipher. Spanish version also available. More: lessons, discussions, ratings, reviews,...
Caesar Cipher II	Operations with numbers (Math 4)+	Java Applet	Tool	[0]
Students practice simple arithmetic skills by encoding and decoding messages to determine the form for an affine cipher. Spanish version also available. More: lessons, discussions, ratings, reviews,...
Caesar Cipher III	Operations with numbers (Math 4)+	Java Applet	Tool	[0]
Students practice their reasoning and arithmetic skills by decoding messages to determine the form for an affine cipher. Spanish version also available. More: lessons, discussions, ratings, reviews,...
Car Jump	Comparing and ordering (Math 4)	Java Applet	Tool	[1]
A math gamelet to help students compare sizes of numbers and their relative locations on a number line. Students position a ramp on the correct place on a number line so the jumping car can land safe... More: lessons, discussions, ratings, reviews,...
Chip Abacus	Place value (Math 4)	Java Applet	Tool	[0]
Learn about carrying and digits using chips. More: lessons, discussions, ratings, reviews,...
Circle 0	Addition (Math 4)	Java Applet	Tool	[4]
Position the 14 numbers inside of the circles and intersections of circles in such a way that the three numbers in each of the circles sums (adds up) to zero. More: lessons, discussions, ratings, reviews,...
Circle 21	Addition (Math 4)	Java Applet	Tool	[1]
A puzzle involving adding positive and negative integers to sum to twenty one. More: lessons, discussions, ratings, reviews,...
Circle 3	Adding decimals (Math 4)	Java Applet	Tool	[2]
Position the numbers inside of the circles and intersections of circles in such a way that the three numbers in each of the circles sums (adds up) to three. More: lessons, discussions, ratings, reviews,...
Circle 99	Addition (Math 4)	Java Applet	Tool	[0]
A puzzle involving adding positive and negative integers to sum to ninety nine. More: lessons, discussions, ratings, reviews,...
Circle Graph	Circle graphs (Math 4)	Java Applet	Tool	[0]
This activity allows the user to graph data on a circle graph. Students can use predefined data sets or enter their own data. More: lessons, discussions, ratings, reviews,...
Circle Grapher	Circle graphs (Math 4)	Java Applet	Tool	[1]
This tool allows users to create a customized circle graph as well as display pre-set circle graphs. More: lessons, discussions, ratings, reviews,...
Clock Arithmetic	Operations with numbers (Math 4)+	Java Applet	Tool	[1]
Students learn about modular arithmetic operations through working with various types of clocks. Parameters: Number of hours on the clock. Spanish version also available. More: lessons, discussions, ratings, reviews,...
Clock Arithmetic on a 10-hour ...	Operations with numbers (Math 4)+	Java Applet	Tool	[0]
On a 10-hour clock, there are only 10 numbers in the whole number system. However, every number has lots of different names. For example, the number before 1 is 0, so 10 = 0 on a 10-hour clock. More: lessons, discussions, ratings, reviews,...
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