Explore various 3-D objects.
3-D Object Viewer		Make an arithmetic arrow!
Algebra arrows		Make one or more arithmetic (or algebra) trees, and compare their graphs, tables and formulas!
Algebra Trees		Practice your algebraic skills.
Area Algebra		Explore arrow language and make sequences!
Arrow chains		Are you an artist?
Artistic Floor
Throw darts and handle your own score.
Barney		Use the broken calculator to reach the target!
Broken Calculator		Make a small cubical house by building or breaking down.
Building houses		Build the presented examples.
Building houses with side views
Building with blocks		On how many places does a given squares fit on the checkerboard?
Checkerboard
Find the red sides in the object and colour them in the drawing as well.
Colouring sides 1		Find the red sides in the object and colour them in the drawing as well.
Colouring sides 2		Find the shortest route between two cities.
Connectivity graph		What side views go with these houses?
Cube houses		Build a 3D-object.
Cut-outs, Nets		Explore recursive relationships.
Discrete dynamic models
Construct lines and planes in polyhedra.
Drawing in Polyhedra		Enlarge the picture and discover the change of the area.
Enlargement		Make an estimation!
Estimate!		Do you know the answer before the problem hits the floor?
Falling problems		Create your own tiling floor
Filling polygons, following Archimedes		Find the function that goes with the graph.
Find the function
Follow the movement!
Flash		Make a flow chart and visualize fractions (and chances)!
Flow charts		Build a formula and find out how much it costs.
Formula maker (Dutch)
Fraction Bar and Percent Bar		Map your data to the screen.
Fraction Times		Make the given graph.
Function game
Construct expressions and compare them.
Geometric Algebra 1D		Practice your algebraic skills.
Geometric Algebra 2D		Solve the problems (see the applet Geometric Algebra 2D for a version without problems).
Geometric Algebra 2D Problems 1		Solve the problems (see the applet Geometric Algebra 2D for a version without problems).
Geometric Algebra 2D Problems 2		Solve the problems (see the applet Geometric Algebra 2D for a version without problems).
Geometric Algebra 2D Problems 3		Complete the story so it matches the graph.
Graphs

Graphs		Follow the growth.
Growth		What side view do you see?
Guess the view		Hit the safe!
Hit the Safe		Build cube-houses with height numbers
Houses with height numbers		What does this figure really look like?
Impossible object
Describe a dynamical process by means of a differential equation
InterEuler, dynamical processes (Dutch)		Jump over the number line.
JumpJump game		Click a line in the white area in the lower left corner. Rotate the object with the mouse.
Lathe (creating 3D objects)		Use the balance strategy to solve the equations.
Linear equations, practice		Solve the equations step by step.
Linear equations, test		Gebruik de weegschaalmethode om de vergelijking op te lossen.
Liniar equations Strategy
Explore logarithmic relations.
Logscale		Make 5 in a row!
Make Five
Measures		Use a horizontal bar graph to display data.
Minitool 1		Use a number line plot to display data.
Minitool 2		Use a scatterplot to display data.
Minitool 3
Does the face look happy or sad?
Mirror		Make 24!
Number card		Reach the given number!
Number Factory		Make your own number strips.
Number strips (used to be Sequences)		Make your own number strips with fractions in the label.
Number strips with fractions		Make your own number strips with the correct label.
Number strips with labels (Sequences with labels)
Explore and combine standard functions.
Playing with functions
Ratio Table		Which and how many different square and rectangular pieces do you need to make a new large rectangle?
Rectangle jigsaw-algebra
Robot		Rotate the object until you have the correct view.
Rotating 3-D objects		Rotate the building until you get the right side view.
Rotating houses
Investigate the orbits of a satellite.
Satellite orbits		Explore the relationships.
Scaling		Explore periodic graphs and functions!
Scope
Seeing through Objects		Make and investigate series. In the applet screen you can drag the sequence on the left to the workspace. If an operation is used in the sequence the result is shown in the sequence on the left. This sequence can be dragged to the work space and can be used for new operations.Use the drop down menu on the sequence for different options or type in the operation on N you want (+, -, *, /, ^)
Sequences (used to be Series)		Shoot the arrow through the balls!
Shooting balls

Shortest route		Find the right slope.
Slope		Use the balance-strategy to solve equations and earn points, or make an equation yourself.
Solving equations with balance-strategy: game		Use the cover up strategy to solve the equation.
Solving equations with cover up strategy		Make and change dot patterns!
Spotting numbers		Investigate various dot patterns.
Spotting numbers problems
Which and how many different square and rectangular pieces do you need to make a new square?
Square jigsaw-algebra		Make three in a row: straight up or down or diagonally.
Tic Tac Go (negative numbers)		Create a tile to fill the whole plane.
Tile patterns		Create your own tiling.
Tiling		Which and how many different triangular pieces do you need to make a new large triangle?
Triangle jigsaw-algebra		Find the value of x that makes the equation true.
True-makers
Build a wall
Walls		Explore the development of a process.
Web graph
What is it?		The world and (wis)web.
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