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Modular Arithmetic Lesson	Number sense (Math 4)	Java Applet	Activity		[1]
Clock (or modular) arithmetic is arithmetic you do on a clock instead of a number line. Investigate arithmetic using a 12-hour, 10-hour, and 2-hour clock. More: lessons, discussions, ratings, reviews,...
Working with Place Value	Place value (Math 4)+	Java Applet	Activity		[1]
Guided, interactive activities help students understand the concept of place value, using the number line, base blocks, and place value charts. More: lessons, discussions, ratings, reviews,...
SMILE Mathematics Activity	Number sense (Math 4)	TI-73 Explorer	Activity		[0]
Step-by-step directions on how to use the the five SMILE Mathematics computer games: MiniMax, Box, Matching Fractions, Angle, and Rhino. More: lessons, discussions, ratings, reviews,...
Base 10 Blocks: Description an...	Place value (Math 4)	Java Applet	Lesson Plan		[2]
Description and lesson plan for the Base 10 Blocks tool, which allows students to interact with virtual base-ten blocks to work with concepts in the basic operations. Also covers applications of the t... More: lessons, discussions, ratings, reviews,...
Clock Arithmetic and Cryptogra...	Number sense (Math 4)	Java Applet	Lesson Plan		[2]
The following discussions and activities are designed to lead the students to practice their basic arithmetic skills by learning about clock arithmetic (aka modular arithmetic) and cryptography. More: lessons, discussions, ratings, reviews,...
Working with Place Value	Place value (Math 4)+	Java Applet	Lesson Plan		[1]
Guided, interactive activities help students understand the concept of place value, using the number line, base blocks, and place value charts. Teacher information includes a list of targeted objectiv... More: lessons, discussions, ratings, reviews,...
In Round Numbers, TI-15	Place value (Math 4)	TI-15	Lesson Plan		[2]
Students will follow a guided discovery lesson to develop and test rules for rounding whole numbers and decimal fractions. They will use the information to solve a real-world problem. More: lessons, discussions, ratings, reviews,...
Clocks and Modular Arithmetic ...	Number sense (Math 4)	Java Applet	Support Material		[0]
A dialogue between a student and a mentor on the relationship between clocks and modular arithmetic. More: lessons, discussions, ratings, reviews,...
Cryptography and Ciphers Dialo...	Number sense (Math 4)	Java Applet	Support Material		[0]
A dialogue between a student and a mentor on the relationship between cryptography and ciphers. More: lessons, discussions, ratings, reviews,...
What are Remainders Dialogue	Number sense (Math 4)	Java Applet	Support Material		[0]
A dialogue between a student and a mentor about remainders. More: lessons, discussions, ratings, reviews,...
Millions and Billions	Large numbers (Math 4)	JavaScript	Support Material		[0]
Examples and illustrations of large numbers to demonstrate that a billion is 1000 times as large as a million. More: lessons, discussions, ratings, reviews,...
Estimating Whole Numbers and D...	Large numbers (Math 4)	Computer	Tool	$	[0]
Alterable worksheet in which students estimate the positions of points on unmarked number lines, on the intervals [0, 100], [0,1000], [-10, 0], [-100, 0]. Fee required for printing: see this page. More: lessons, discussions, ratings, reviews,...
Estimating Whole Numbers and D...	Large numbers (Math 4)	Computer	Tool	$	[0]
Alterable worksheet in which students estimate the positions of points on unmarked number lines, on the intervals [0, 1], [0, 100], [0, 1000], [0, 10000], [-10, 10], [-100, 0]. Fee required to print;... More: lessons, discussions, ratings, reviews,...
Number Grid Level 3	Number sense (Math 4)	Flash	Tool		[1]
Third level in a collection of five Number Grid activities. It displays a section of a matrix containing a set of consecutive whole numbers. A move from one number to the next within a row is a change... More: lessons, discussions, ratings, reviews,...
Number Grid Level 4	Number sense (Math 4)	Flash	Tool		[1]
Fourth level in a collection of five Number Grid activities. It displays a section of a matrix containing a set of consecutive whole numbers. A move from one number to the next within a row is a chang... More: lessons, discussions, ratings, reviews,...
Number Grid Level 5	Number sense (Math 4)	Flash	Tool		[4]
Fifth level in a collection of five Number Grid activities. It displays a section of a matrix containing a set of consecutive whole numbers. A move from one number to the next within a row is a change... More: lessons, discussions, ratings, reviews,...
Writing Big Numbers	Place value (Math 4)+	Flash	Tool		[0]
The aim of this module is to review large numbers, practice writing numbers as words, and as a reminder of place value. The module includes factsheets, worksheets, an activity, and a game. More: lessons, discussions, ratings, reviews,...
Aritm�tica del reloj	Number sense (Math 4)	Java Applet	Tool		[0]
Los estudiantes aprenden operaciones de aritm�tica modular trabajando con diferentes tipos de relojes. Par�metros: N�mero de horas en el reloj. versi�n en ingl�s More: lessons, discussions, ratings, reviews,...
Base 10 Blocks: Exploring Othe...	Place value (Math 4)	Java Applet	Tool		[1]
Virtual base-ten blocks (that can be stuck together or broken apart into smaller units, rotated, moved around, etc.) and ideas on using them for addition, subtraction, multiplication, several algorith... More: lessons, discussions, ratings, reviews,...
Base Blocks	Place value (Math 4)+	Java Applet	Tool		[4]
Illustrate addition and subtraction in a variety of bases. More: lessons, discussions, ratings, reviews,...
Base Blocks Decimals	Place value (Math 4)	Java Applet	Tool		[1]
Add and subtract decimal values using base blocks. More: lessons, discussions, ratings, reviews,...
Caesar Cipher	Number sense (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	Number sense (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	Number sense (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,...
Chip Abacus	Place value (Math 4)	Java Applet	Tool		[0]
Learn about carrying and digits using chips. More: lessons, discussions, ratings, reviews,...
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