Watch the abscissa and ordinate values for ordered pairs change by dragging a point across 4 quadrants of a graph
Learn when angles are acute, obtuse or right with an interactive protractor
See the area and perimeter of circles, parallelograms, rectangles, squares and trapezoids change as they get bigger or smaller
Change the arc, central angle, inscribed angle, segment, sector and chord of circles by dragging interactive points
See a triangle and its circumcenter change by dragging on its three points
Make the area, radius, circumference and diameter of a circle change by dragging a point to make it bigger or smaller
Drag points on graphs to see quadrants, ordered pairs and coordinates change
Rotate three dimensional solid and wire frame models of polyhedra and platonic solids that include a pyramid, prism, cube, icosahedron, dodecahedron, icosahedron, and octahedron and tetrahedron
Model geometric ideas on an interactive geoboard
See a step-by-step interactive proof of the Pythagorean Theorem
Explore interactive demonstrations of rotations, reflections and translations
Algebra
Click on an interactive number line to see the absolute value of the number chosen
Explore algebraic concepts with interactive algebra tiles
Drag a constant function up and down a piece of graph paper and watch the y and y-intercept values change
Plot and find the roots of quadratic equations
Move an interactive line to different positions on piece of graph paper and watch how its slope and y-intercept change
Investigate x and y intercepts by sliding interactive lines that are attached to the x and y axis to different positions on a piece of graph paper
Enter x and y values for a function in a table of values and see them plotted on a piece of graphing paper
Arithmetic and Number Theory
Watch step by step demonstrations of addition, subtraction, multiplication, and division
Enter a number, select a base and see it converted to its equivalent value for other bases that include decimal, hexadecimal, duodecimal, octal, ternary and binary
Interact with addition and multiplication tables shows the sums and the products of numbers between 0 and 9
Cross multiply fractions to see if they are equal
Experience the basic operation of division by picking 20 apples from an interactive tree and dividing them equally between 3 baskets
Play an interactive estimating game to see who can come up with the best estimate for the product of two numbers
Create factor tress for numbers between 1 and 500
See fractions with numerators and denominators between 0 and 20 visually represented by a circle divided into red and white pie slices
Drag weights onto the pans of an interactive scale to explore greater than, less than, less than or equal to and greater than or equal to.
Use interactive base10 number blocks to explore place value
Determine prime numbers for values from 2 to 100 using an interactive version of the Sieve of Eratosthenes
Find the greatest common factor for two numbers using a simple template
Measurement
Slide a scroll bar up and down and see a visual comparison of changes in temperature on Fahrenheit, Celsius and Kelvin Scales
Explore changes in measure for angles of incidence and reflection with an interactive flashlight
Drag a circle, a parallelogram, a rectangle, a square, a trapezoid and a triangle and watch measures of their different attributes such as area, base, height, and width change grow larger or smaller
Calculate sales commissions, discount pricing, markups and markdowns and sales tax rates with simple interactive templates
Explore and compare the concepts of compound and simple interest with an interactive template
Convert measures of area, length and distance, volume and capacity, and weight and mass with a series of conversion templates
Click on a series of clock to explore the 5 North American time zones
Compare your weight on earth with your weight on the moon and the other eight planets
Probability & Statistics
See the impact changing data has upon a bar graph, a circle graph, a histogram, and a pictograph
Run animated Bernoulli trials with 2 to 7 possible outcomes
Make revisions to a data set and watch the impact this has upon a related frequency table
Perform probability experiments with a probability spinner that can be adjusted to provide 2 to 6 possible outcomes and to measure up to 999 spins at a time
Explore an interactive version of Pascal's Triangle
Generate all of the possible permutations for a word with 7 letters or less
Trigonometry
Watch angles of depression and elevation change with visual animations of a hang glider and a sail boat
Interact with animations of sine and cosine functions that are defined using the unit circle
Explore how trigonometric ratios can be defined by the unit circle by dragging an interactive figure through the four quadrants of a graph
Enrichment
Represent numbers on an interactive abacus
Meet the challenge of classic logic games and reasoning problems that include:
Farmer, Wolf, Goat, and Cabbage Problem
Four Color Problem
Jacob's Ladder
Peg Game
Rolling Cubes Puzzle
Three Glass Problem
Towers of Hanoi
Tackle Three Classic "Chess" Challenges
Four Knights Problem
Gentle Bishops
Queen's Problem
Play Conway's Game of Life
Build logic circuits using an interactive tool containing 7 different logic gates that can be combined into networks
Use interactive tangram pieces to match a silhouetted figure or to create your own designs