Mathematics for Elementary Teachers
Index of eManipulatives
Abacus – An electronic abacus that can be used to do arithmetic.
Adding Fractions – Illustrates what it means to find a common denominator and combine.
Algebra Tiles – Visualize multiplying and factoring algebraic expressions using tiles.
Balance Beam Algebra – Solve simple linear equations using a balance beam representation.
Base Blocks Addition – Use base ten blocks to model grouping in addition.
Base Blocks Decimals – Add and subtract decimal values using base blocks.
Base Blocks Subtraction – Use base ten blocks to model separation of groups in subtraction.
Box Plot – Use this tool to summarize data using a box plot graph.
Chip Abacus – Learn about carrying and digits using chips.
Chips Minus – Use color chips to illustrate subtraction of integers.
Chips Plus – Use color chips to illustrate addition of integers.
Circle 0 – Solve puzzles involving arranging numbers in circles so that they add up to 0.
Circle 21 – Solve puzzles involving arranging numbers in circles so that they add up to 21.
Circle 99 – Solve puzzles involving arranging numbers in circles so that they add up to 99.
Coin Tossing – Explore probability concepts by simulating repeated coin tosses.
Color Patterns – Complete patterns created by a sequence of colors.
Comparing Fractions – Judge the size of fractions and plot them on a number line.
Composition of Transformations – Explore the effect of applying a composition of translation, rotation, and reflection transformations to objects.
Congruence – Build similar triangles by combining sides and angles.
Coordinate Geoboard – Rectangular geoboard with x and y coordinates.
Counterfeit Coin – Use deduction to find the counterfeit coin.
Dilation Transformations – Dynamically interact with and see the result of a dilation transformation.
Dividing Fractions – Divide fractions using number line bars.
Equivalent Fractions – Illustrates relationships between equivalent fractions.
Factor Tree – Factor numbers using a tree diagram.
Fill and Pour – Solve puzzles requiring you to fill and pour containers.
Fractals – Change colors and pause this fractal simulation at any point.
Function Grapher – A tool for graphing and exploring functions.
Function Machine – Determine what the function machine's output will be.
Geoboard – Use geoboard to illustrate area, perimeter, and rational number concepts.
Geoboard (Triangular Lattice) – Use geoboard to illustrate three-dimensional shapes.
Histogram – Use this tool to summarize data you enter using a histogram graph.
Let's Make a Deal – Investigate probabilities of sticking with a decision, or switching.
Magic Cube – Explore a 3-dimensional 5x5 magic cube.
Multibase Blocks – Illustrate addition and subtraction in a variety of bases.
Multiplying Fractions – Visualize and practice multiplying fractions using an area representation.
Naming Fractions – Write the fraction corresponding to the highlighted portion of a shape.
Number Bounce – Number line addition and subtraction game.
Number Line Bars – Use number line bars to learn about whole numbers.
Number Line Arithmetic – Illustrates arithmetic operations using a number line.
Number Puzzles – Solve puzzles involving arranging numbers on a diagram so that they add up to a given value.
Parts of a Whole – Relates parts of a whole unit to written description and fraction.
Pattern Blocks – Use six common geometric shapes to build patterns and solve problems.
Percent Gauge – Discover relationships between fractions, percents, and decimals.
Pythagorean Theorem – Solve two puzzles that illustrate the proof of the Pythagorean Theorem.
Rectangle Division – Visualize and practice dividing numbers by using an area representation.
Rectangle Multiplication – Visualize the multiplication of two numbers as an area.
Reflection Transformations – Dynamically interact with and see the result of a reflection transformation.
Rotation Transformations – Dynamically interact with and see the result of a rotation transformation.
Scatterplot – Plot multiple data points in two dimensions and determine correlation.
Sieve of Eratosthenes – Relate number patterns with visual patterns.
Simulation – Randomly selects and displays draws from a box.
Slicing Solids – Discover shapes and relationships between slices of the platonic solids.
Space Blocks – Create and discover patterns using three dimensional blocks.
Tessellations – Using regular and semi-regular tessellations to tile the plane.
Towers of Hanoi – Solve the tower problem and test your theory by varying the number of disks.
Translation Transformations – Dynamically interact with and see the result of a translation transformation.
Venn Diagrams – Investigate common features of sets.
Visualizing Fractions – Illustrate a fraction by dividing a shape and highlighting the appropriate parts.
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