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CoinBox
Number and Operations

Coin Box

Pre-K-2, 3-5
Learn how to count, collect, exchange, and make change for coins by manipulating coins using an array representation.
DynamicPaper ICON
Data Analysis and Probability

Dynamic Paper

Pre-K-2, 3-5, 6-8, 9-12

Need a pentagonal pyramid that's six inches tall? Or a number line that goes from ‑18 to 32 by 5's? You can create all those things and more! Place the images you want, then export it as a PDF or as a JPG image.

EquivalentFractions
Number and Operations

Equivalent Fractions

3-5

This applet allows you to create equivalent fractions by dividing and shading squares or circles, and match each fraction to its location on the number line.

Factorize
Number and Operations

Factorize

3-5, 6-8
Dividing Numbers into Two Factors and Building Arrays to Represent Each Factorization
FractalTool
Geometry

Fractal Tool

3-5, 6-8, 9-12
This applet allows you to explore iteration and patterns in shapes and numbers with fractals.
FractionModels
Number and Operations

Fraction Models

3-5, 6-8
Explore different representations for fractions including improper fractions, mixed numbers, decimals, and percentages. Additionally, there are length, area, region, and set models.
GeometricSolids
Geometry

Geometric Solids

Pre-K-2, 3-5, 6-8, 9-12
This tool allows you to manipulate various geometric solids and investigate their properties.
GroupingAndGrazing ICON
Number and Operations

Grouping and Grazing

Pre-K-2
Help the alien spaceship move cows into corrals by counting, adding, and subtracting. This activity helps children learn grouping, tally marks, and place value.
PanBalanceExpressions
Algebra

Pan Balance – Expressions

3-5, 6-8, 9-12
Using this interactive tool, you can practice arithmetic and algebraic skills, and investigate the important concept of equivalence.
PanBalanceNumbers
Algebra

Pan Balance – Numbers

3-5, 6-8
Use this tool to strengthen understanding and computation of numerical expressions and equality using a balance scale.