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Resource Name 
Topic (Course) 
Technology 
Type 
$? 
Rating 

The Geometer's Sketchpad

General (Math 4) 
Sketchpad 
Tool 
$ 
[1]

With a scope that spans the mathematics curriculum from middle school to college, The Geometer's Sketchpad brings a powerful dimension to the study of mathematics. Sketchpad is a dynamic geometry cons...
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Balance

Algebra (Math 4)+ 
Sketchpad 
Tool 

[0]

This sketch contains a collection of five different shapes: a star, square, circle, triangle, and diamond. The weight of these shapes can be compared by using the provided balance scale; simply drag o...
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Circles and Squares

Algebra (Math 4) 
Sketchpad 
Tool 

[0]

Using arithmetic reasoning and logic, players try to determine the secret values of the square and circle in as few turns as possible.
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Mystery Sums 1

Algebra (Math 4)+ 
Sketchpad 
Tool 

[1]

Students use logic and early algebra reasoning skills to find the secret numerical values of four letters.
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Set Puzzles

Algebra (Math 4)+ 
Sketchpad 
Tool 

[1]

Students use logical reasoning skills to determine what numbers go inside three different colored circles to create given sums. Students are informally introduced to the concept of sets.
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Types of Triangles

Classify geometric objects (Math 4)+ 
Sketchpad 
Tool 

[0]

This Sketchpad sketch 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, isos...
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Reach the Target

Estimation (Math 4)+ 
Sketchpad 
Tool 

[1]

Students use their knowledge of place value to identify the locations of unlabeled tick marks along number lines. These locations are exact to units, tenths, and all the way up to hundred thousandths.
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Measuring Fish

Fractions (Math 4)+ 
Sketchpad 
Tool 

[0]

Students use special rulers to measure the size of fish using "binkers" a nonstandard unit. Students encounter fish that are not whole number units in length and experiment with the use of fractional...
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Ghost Paths

Geometry in the plane (Math 4) 
Sketchpad 
Tool 

[0]

Students move two ghost characters (Doug and Linda) around the screen to explore geometric concepts. Students discover connections between the ghosts' constructed paths by comparing them and looking f...
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Lulu, Sketchpad version

Geometry in the plane (Math 4) 
Sketchpad 
Tool 

[0]

Students interact with a firstquadrant coordinate system, learning how to specify points though their coordinates and to describe horizontal and vertical motion on the grid.
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Stretching Ruler

Length/height (Math 4)+ 
Sketchpad 
Tool 

[0]

This set of activities introduces students to mathematical foundations of measurement, and especially to the concept of the unit of measurement. Students create their own rulers to measure different o...
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Curved Path

Measurement (Math 4) 
Sketchpad 
Tool 

[0]

The mathematical ideas developed in this activity consist in the iteration of linear units to measure a curved path. The process of constructing a path of a given length can be difficult, even for mid...
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Color by Numbers

Number theory (Math 4) 
Sketchpad 
Tool 

[0]

Students investigate patterns produced on a grid of numbers generated through addition and multiplication of the whole numbers. The focus is on elementary number theory concepts such as even/odd, fact...
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Grouping I and II

Number theory (Math 4) 
Sketchpad 
Tool 

[0]

Grouping I: The goal of this activity is twofold. First, it introduces students to Sketchpad's most important tools and menu commands. Second, it helps students appreciate how grouping objec...
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Jump Along

Operations with numbers (Math 4)+ 
Sketchpad 
Tool 

[1]

This activity involves a number line along which students observe consecutive jumps, controlling both the number of jumps and jump size. This sketch can be used to model basic questions involving the ...
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Making a Kaleidoscope

Reflections (Math 4)+ 
Sketchpad 
Tool 

[1]

In this activity, students create their own Sketchpad kaleidoscopes. In the process, they learn about rotation and reflection, as well as gaining some skill using Sketchpad's transformation features.
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Similarity

Similarity (Math 4) 
Sketchpad 
Tool 

[0]

This activity introduces students to the important ideas of similarity and congruence. Students create their own resizeable logos, which they then use to construct similar shapes. Students can contin...
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Funhouse Mirrors

Symmetry (Math 4)+ 
Sketchpad 
Tool 

[0]

A Geometer's Sketchpad tool for constructing distorted images that can be viewed undistorted with a cylindrical mirror. The file contains tabbed pages with several images, a grid for students to draw...
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RooBooGoo

Symmetry (Math 4)+ 
Sketchpad 
Tool 

[0]

The idea of this activity is to introduce students to some of the basic transformational behaviors. The emphasis is less on properties than on relationships between objects that have been reflected, r...
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