Create the perfect prom night image using the Law of Reflection! An interactive lesson explores angles of reflection when looking in a full-length mirror. Learners change the distance from the mirror and length of the mirror and watch...

Can you lift a piano into a truck? Simulation allows scholars to explore the relationship between force, ramp length, and weight. Pupils control the variables of truck bed height, ramp length, weight of piano, and the number of friends...

How do contact lenses work? The simulation allows young scientists to explore focal length and lens type to see how and why contact lenses work. Pupils control the focal length for an eye and a lens, the type of lens, and the distance...

Go from one side length to any other side length with special right triangles. Individuals use the interactive to investigate the ratio of sides in 45-45 and 30-60 right triangles. Scholars make generalizations about the types of special...

Good fences make good gardens. Individuals use an interactive to see how angles and sides relate in a triangular-shaped garden fence. They apply the Law of Sines to find the length of the garden gate (third side of triangle) given two...

Get straight answers on a curved grid. An interactive has learners apply the Law of Cosines to find the distance between two points on the polar coordinate plane. The pupils use the radii lengths and the angle between the two radii...

Explore the building blocks of the Fibonacci Sequence. Given the lengths of sides of squares, pupils deduce the pattern to determine the lengths of two more squares. Learners continue to work with recursive formulas to generate numerical...

Teach budding mathematicians how to square a triangle with an interactive that shows a graphical proof of the Pythagorean Theorem. Pupils alter the lengths of the legs using sliders. Using the inputted lengths, the applet displays the...

Your classroom will be rockin' during an toe-tapping lesson! Dave Matthews inspires a lesson on proportions as youth listen to a song and predict its length. Lesson materials provide learners with ordered pairs that mark the time slider...

Resistance is not futile ... it is voltage divided by current. Scholars apply their knowledge to a series of ranking puzzles. First, they consider wires of varying lengths and then wires of varying cross-sectional areas. Finally, they...

One cyclist goes to great lengths to make his proposal! Your classes must figure out just what length that is. Using a map with a bike route that spells out Marry Me, learners calculate the total distance of the ride. They base their...

People don't all get the same amount of sun at the same time of the year. Collaborative groups explore how the motion of Earth contributes to the idea in an inquiry-based STEM instructional activity. Learners first investigate how the...

No need for a knife when a fork will do! Groups of pupils first read about the science of sound, and then experiment with tuning forks. Teams gather information about the pitch and length of their forks and compare them to...

Strike the right chord with a musical activity! Instructors provide a lecture on the mechanics of a pan flute. Pupils build their own pan flutes by using straws and calculating the lengths to create a scale. After cutting the straws to...

Show students that right triangles are radical. Learners see how the lengths of the sides of a 45-45-90 triangle relate. Using that relationship, pupils observe how to find any of the lengths given one side of a triangle. They go on to...

Put the vertex in, put the vertex out. Pupils explore theorems about the relationships of lengths of segments and angles of line segments that intersect inside or outside the circle. Learners use the theorems to solve problems involving...

Youngsters think about the length of different periods of time. They label the seven most common units of time measurement, then answer eight questions that have to deal with those same units of time. A good worksheet!

Learners compute the cost of electricity used to light their classroom and their school for various lengths of time. They compute the amount of coal needed to produce the electricity used for one hour of light in their classroom. An...

Scholars view the video, "Donald Duck in Mathmagic Land," and discuss examples in nature which have proportions of the golden ratio. They measure and record different body lengths from a worksheet and convert the ratios to equivalent...

Wow! This resource provides three related lessons on the First Amendment that challenge US government students to explore their personal opinion on the separation of church and state. Each lesson can be adjusted in length, but is...

Students determine the percentage increase in output of solid waste in the U.S. They determine the length of time it takes for throw away items to decompose.

A fossil is worth a thousand words! Individuals craft their own amber fossil of an insect in addition to molds and casts of seashells. A third activity takes the lesson a notch higher: Learners measure stride lengths between tracks and...

Here is a wonderful lesson which has youngsters interview family and local elders about the seasonal history of their local area. They focus on climate change by asking questions about rainfall, temperatures, length of the seasons, and...

Read to learn all about the religion and belief systems of the Arctic-dwelling Inuits. This resource includes an easy-to-follow reading passage that is seven paragraphs in length, and five great critical thinking questions.